diff --git a/app/assets/javascripts/app/controllers/_application_controller.coffee b/app/assets/javascripts/app/controllers/_application_controller.coffee
index b1c2ab1d3..b30d0683f 100644
--- a/app/assets/javascripts/app/controllers/_application_controller.coffee
+++ b/app/assets/javascripts/app/controllers/_application_controller.coffee
@@ -227,7 +227,7 @@ class App.Controller extends Spine.Controller
       App.Config.set('requested_url', location)
 
     if closeTab
-      App.TaskManager.remove(@task_key)
+      App.TaskManager.remove(@taskKey)
 
     # redirect to login
     @navigate '#login'
@@ -547,32 +547,6 @@ class App.Controller extends Spine.Controller
     item.created_by = App.User.findNative(item.created_by_id)
     item
 
-  # central method, is getting called on every ticket form change
-  ticketFormChanges: (params, attribute, attributes, classname, form, ui) =>
-    if @formMeta.dependencies && @formMeta.dependencies[attribute.name]
-      dependency = @formMeta.dependencies[attribute.name][ parseInt(params[attribute.name]) ]
-      if !dependency
-        dependency = @formMeta.dependencies[attribute.name][ params[attribute.name] ]
-      if dependency
-        for fieldNameToChange of dependency
-          filter = []
-          if dependency[fieldNameToChange]
-            filter = dependency[fieldNameToChange]
-
-          # find element to replace
-          for item in attributes
-            if item.name is fieldNameToChange
-              item['filter'] = {}
-              item['filter'][ fieldNameToChange ] = filter
-              item.default = params[item.name]
-              #if !item.default
-              #  delete item['default']
-              newElement = ui.formGenItem(item, classname, form)
-
-          # replace new option list
-          if newElement
-            form.find('[name="' + fieldNameToChange + '"]').closest('.form-group').replaceWith(newElement)
-
   stopPropagation: (e) ->
     e.stopPropagation()
 
@@ -592,19 +566,19 @@ class App.Controller extends Spine.Controller
     @clearDelay(@initLoadingDoneDelay)
 
   renderScreenSuccess: (data) ->
-    App.TaskManager.touch(@task_key) if @task_key
+    App.TaskManager.touch(@taskKey) if @taskKey
     (data.el || @).html App.view('generic/error/success')(data)
 
   renderScreenError: (data) ->
-    App.TaskManager.touch(@task_key) if @task_key
+    App.TaskManager.touch(@taskKey) if @taskKey
     (data.el || @).html App.view('generic/error/generic')(data)
 
   renderScreenNotFound: (data) ->
-    App.TaskManager.touch(@task_key) if @task_key
+    App.TaskManager.touch(@taskKey) if @taskKey
     (data.el || @).html App.view('generic/error/not_found')(data)
 
   renderScreenUnauthorized: (data) ->
-    App.TaskManager.touch(@task_key) if @task_key
+    App.TaskManager.touch(@taskKey) if @taskKey
     (data.el || @).html App.view('generic/error/unauthorized')(data)
 
   locationVerify: (e) =>
@@ -901,7 +875,7 @@ class App.UpdateTastbar extends App.Controller
   update: (genericObject) =>
 
     # update taskbar with new meta data
-    App.TaskManager.touch(@task_key)
+    App.TaskManager.touch(@taskKey)
 
 class App.ControllerWidgetPermanent extends App.Controller
   constructor: (params) ->
diff --git a/app/assets/javascripts/app/controllers/_application_controller_form.coffee b/app/assets/javascripts/app/controllers/_application_controller_form.coffee
index 91fdcbdb1..540175fce 100644
--- a/app/assets/javascripts/app/controllers/_application_controller_form.coffee
+++ b/app/assets/javascripts/app/controllers/_application_controller_form.coffee
@@ -6,6 +6,12 @@ class App.ControllerForm extends App.Controller
 
     if !@handlers
       @handlers = []
+
+    if @handlersConfig
+      for key, value of @handlersConfig
+        if value && value.run
+          @handlers.push value.run
+
     @handlers.push @showHideToggle
     @handlers.push @requiredMandantoryToggle
 
diff --git a/app/assets/javascripts/app/controllers/agent_ticket_create.coffee b/app/assets/javascripts/app/controllers/agent_ticket_create.coffee
index 5b3ec5de1..2d5db5aac 100644
--- a/app/assets/javascripts/app/controllers/agent_ticket_create.coffee
+++ b/app/assets/javascripts/app/controllers/agent_ticket_create.coffee
@@ -28,9 +28,17 @@ class App.TicketCreate extends App.Controller
     @bindId = App.TicketCreateCollection.one(load)
 
     # rerender view, e. g. on langauge change
-    @bind 'ui:rerender', =>
+    @bind('ui:rerender', =>
       return if !@authenticateCheck()
       @render()
+    )
+
+    # listen to rerender sidebars
+    @bind('ui::ticket::sidebarRerender', (data) =>
+      return if data.taskKey isnt @taskKey
+      return if !@sidebarWidget
+      @sidebarWidget.render(@params())
+    )
 
   release: =>
     App.TicketCreateCollection.unbindById(@bindId)
@@ -98,7 +106,7 @@ class App.TicketCreate extends App.Controller
     @$('.js-note').addClass('hide')
     @$(".js-note[data-type='#{type}']").removeClass('hide')
 
-    App.TaskManager.touch(@task_key)
+    App.TaskManager.touch(@taskKey)
 
   meta: =>
     text = ''
@@ -138,7 +146,7 @@ class App.TicketCreate extends App.Controller
 
   autosaveStart: =>
     if !@autosaveLast
-      task = App.TaskManager.get(@task_key)
+      task = App.TaskManager.get(@taskKey)
       if task && !task.state
         task.state = {}
       @autosaveLast = task.state || {}
@@ -149,12 +157,12 @@ class App.TicketCreate extends App.Controller
       if _.isEmpty(@autosaveLast) || !_.isEmpty(diff)
         @autosaveLast = data
         @log 'debug', 'form hash changed', diff, data
-        App.TaskManager.update(@task_key, { 'state': data })
+        App.TaskManager.update(@taskKey, { 'state': data })
 
         # check it task title in task need to be updated
         if @latestTitle isnt data.title
           @latestTitle = data.title
-          App.TaskManager.touch(@task_key)
+          App.TaskManager.touch(@taskKey)
 
     @el.on('change.local blur.local keyup.local paste.local input.local', 'form, .js-textarea', (e) =>
       @delay(update, 250, 'ticket-create-form-update')
@@ -173,7 +181,7 @@ class App.TicketCreate extends App.Controller
 
     # fetch split ticket data
     @ajax(
-      id:    "ticket_split#{@task_key}"
+      id:    "ticket_split#{@taskKey}"
       type:  'GET'
       url:   "#{@apiPath}/ticket_split"
       data:
@@ -214,8 +222,8 @@ class App.TicketCreate extends App.Controller
     params = @prefilledParams || {}
     if template && !_.isEmpty(template.options)
       params = template.options
-    else if App.TaskManager.get(@task_key) && !_.isEmpty(App.TaskManager.get(@task_key).state)
-      params = App.TaskManager.get(@task_key).state
+    else if App.TaskManager.get(@taskKey) && !_.isEmpty(App.TaskManager.get(@taskKey).state)
+      params = App.TaskManager.get(@taskKey).state
       if !_.isEmpty(params['form_id'])
         @formId = params['form_id']
 
@@ -226,40 +234,6 @@ class App.TicketCreate extends App.Controller
       form_id: @formId
     ))
 
-    signatureChanges = (params, attribute, attributes, classname, form, ui) =>
-      if attribute && attribute.name is 'group_id'
-        signature = undefined
-        if params['group_id']
-          group = App.Group.find(params['group_id'])
-          if group && group.signature_id
-            signature = App.Signature.find(group.signature_id)
-
-        # check if signature need to be added
-        type = @$('[name="formSenderType"]').val()
-
-        if signature isnt undefined &&  signature.body && type is 'email-out'
-          signatureFinished = App.Utils.replaceTags(signature.body, { user: App.Session.get(), config: App.Config.all() })
-
-          body = @$('[data-name=body]')
-          if App.Utils.signatureCheck(body.html() || '', signatureFinished)
-
-            # if signature has changed, in case remove old signature
-            signature_id = @$('[data-signature=true]').data('signature-id')
-            if signature_id && signature_id.toString() isnt signature.id.toString()
-
-              @$('[data-signature="true"]').remove()
-
-            if !App.Utils.htmlLastLineEmpty(body)
-              body.append('<br><br>')
-            signature = $("<div data-signature=\"true\" data-signature-id=\"#{signature.id}\">#{signatureFinished}</div>")
-            App.Utils.htmlStrip(signature)
-            body.append(signature)
-            @$('[data-name=body]').replaceWith(body)
-
-        # remove old signature
-        else
-          @$('[data-name="body"]').find('[data-signature=true]').remove()
-
     App.Ticket.configure_attributes.push {
       name: 'cc'
       display: 'Cc'
@@ -277,20 +251,22 @@ class App.TicketCreate extends App.Controller
         edit: {}
       }
     }
+
+    handlers = @Config.get('TicketCreateFormHandler')
+
     new App.ControllerForm(
-      el:       @$('.ticket-form-top')
-      form_id:  @formId
-      model:    App.Ticket
-      screen:   'create_top'
+      el:             @$('.ticket-form-top')
+      form_id:        @formId
+      model:          App.Ticket
+      screen:         'create_top'
       events:
         'change [name=customer_id]': @localUserInfo
-      handlers: [
-        @ticketFormChanges,
-        signatureChanges,
-      ]
-      filter:    @formMeta.filter
-      autofocus: true
-      params:    params
+      handlersConfig: handlers
+      filter:         @formMeta.filter
+      formMeta:       @formMeta
+      autofocus:      true
+      params:         params
+      taskKey:        @taskKey
     )
 
     new App.ControllerForm(
@@ -299,35 +275,34 @@ class App.TicketCreate extends App.Controller
       model:   App.TicketArticle
       screen:  'create_top'
       params:  params
+      taskKey: @taskKey
     )
     new App.ControllerForm(
-      el:      @$('.ticket-form-middle')
-      form_id: @formId
-      model:   App.Ticket
-      screen:  'create_middle'
+      el:             @$('.ticket-form-middle')
+      form_id:        @formId
+      model:          App.Ticket
+      screen:         'create_middle'
       events:
         'change [name=customer_id]': @localUserInfo
-      handlers: [
-        @ticketFormChanges,
-        signatureChanges,
-      ]
-      filter:     @formMeta.filter
-      params:     params
-      noFieldset: true
+      handlersConfig: handlers
+      filter:         @formMeta.filter
+      formMeta:       @formMeta
+      params:         params
+      noFieldset:     true
+      taskKey:        @taskKey
     )
     new App.ControllerForm(
-      el:       @$('.ticket-form-bottom')
-      form_id:  @formId
-      model:    App.Ticket
-      screen:   'create_bottom'
+      el:             @$('.ticket-form-bottom')
+      form_id:        @formId
+      model:          App.Ticket
+      screen:         'create_bottom'
       events:
         'change [name=customer_id]': @localUserInfo
-      handlers: [
-        @ticketFormChanges,
-        signatureChanges,
-      ]
-      filter:   @formMeta.filter
-      params:   params
+      handlersConfig: handlers
+      filter:         @formMeta.filter
+      formMeta:       @formMeta
+      params:         params
+      taskKey:        @taskKey
     )
     App.Ticket.configure_attributes.pop()
 
@@ -351,7 +326,7 @@ class App.TicketCreate extends App.Controller
       el:           @sidebar
       params:       @formDefault
       sidebarState: @sidebarState
-      task_key:     @task_key
+      taskKey:      @taskKey
       query:        @query
     )
 
@@ -361,7 +336,7 @@ class App.TicketCreate extends App.Controller
       App.User.full(@formDefault.customer_id, callback)
 
     # update taskbar with new meta data
-    App.TaskManager.touch(@task_key)
+    App.TaskManager.touch(@taskKey)
 
   localUserInfo: (e) =>
     return if !@sidebarWidget
@@ -387,11 +362,14 @@ class App.TicketCreate extends App.Controller
     e.preventDefault()
     @navigate '#'
 
+  params: =>
+    params = @formParam(@$('.main form'))
+
   submit: (e) =>
     e.preventDefault()
 
     # get params
-    params = @formParam(e.target)
+    params = @params()
 
     # fillup params
     if !params.title
@@ -500,7 +478,7 @@ class App.TicketCreate extends App.Controller
           timeout: 4000
 
         # close ticket create task
-        App.TaskManager.remove(ui.task_key)
+        App.TaskManager.remove(ui.taskKey)
 
         # scroll to top
         ui.scrollTo()
diff --git a/app/assets/javascripts/app/controllers/agent_ticket_create/form_hander_signature.coffee b/app/assets/javascripts/app/controllers/agent_ticket_create/form_hander_signature.coffee
new file mode 100644
index 000000000..f5c2ad89e
--- /dev/null
+++ b/app/assets/javascripts/app/controllers/agent_ticket_create/form_hander_signature.coffee
@@ -0,0 +1,38 @@
+class TicketCreateFormHanderSignature
+
+  @run: (params, attribute, attributes, classname, form, ui) ->
+    return if !attribute
+    return if attribute.name isnt 'group_id'
+    signature = undefined
+    if params['group_id']
+      group = App.Group.find(params['group_id'])
+      if group && group.signature_id
+        signature = App.Signature.find(group.signature_id)
+
+    # check if signature need to be added
+    type = ui.el.closest('.content').find('[name="formSenderType"]').val()
+    if signature &&  signature.body && type is 'email-out'
+      signatureFinished = App.Utils.replaceTags(signature.body, { user: App.Session.get(), config: App.Config.all() })
+
+      currentBody = ui.el.closest('.content').find('[data-name=body]')
+      if !_.isEmpty(currentBody)
+        if App.Utils.signatureCheck(currentBody.html() || '', signatureFinished)
+
+          # if signature has changed, in case remove old signature
+          signature_id = ui.el.closest('.content').find('[data-signature=true]').data('signature-id')
+          if signature_id && signature_id.toString() isnt signature.id.toString()
+
+            ui.el.closest('.content').find('[data-signature="true"]').remove()
+
+          if !App.Utils.htmlLastLineEmpty(currentBody)
+            currentBody.append('<br><br>')
+          signature = $("<div data-signature=\"true\" data-signature-id=\"#{signature.id}\">#{signatureFinished}</div>")
+          App.Utils.htmlStrip(signature)
+          currentBody.append(signature)
+          ui.el.closest('.content').find('[data-name=body]').replaceWith(currentBody)
+
+    # remove old signature
+    else
+      ui.el.closest('.content').find('[data-name="body"]').find('[data-signature=true]').remove()
+
+App.Config.set('200-ticketFormSignature', TicketCreateFormHanderSignature, 'TicketCreateFormHandler')
diff --git a/app/assets/javascripts/app/controllers/agent_ticket_create/sidebar.coffee b/app/assets/javascripts/app/controllers/agent_ticket_create/sidebar.coffee
index 1d34f85d6..66f811ee3 100644
--- a/app/assets/javascripts/app/controllers/agent_ticket_create/sidebar.coffee
+++ b/app/assets/javascripts/app/controllers/agent_ticket_create/sidebar.coffee
@@ -23,9 +23,10 @@ class App.TicketCreateSidebar extends App.Controller
     for key in keys
       if !@sidebarBackends[key] || !@sidebarBackends[key].reload
         @sidebarBackends[key] = new sidebarBackends[key](
-          params:  @params
-          query:   @query
-          taskGet: @taskGet
+          params:   @params
+          query:    @query
+          taskGet:  @taskGet
+          taskKey:  @taskKey
         )
       else
         @sidebarBackends[key].reload(
diff --git a/app/assets/javascripts/app/controllers/customer_ticket_create.coffee b/app/assets/javascripts/app/controllers/customer_ticket_create.coffee
index 8170abf41..559c9da9a 100644
--- a/app/assets/javascripts/app/controllers/customer_ticket_create.coffee
+++ b/app/assets/javascripts/app/controllers/customer_ticket_create.coffee
@@ -24,6 +24,7 @@ class Index extends App.ControllerContent
 
     # set defaults
     defaults = template['options'] || {}
+    handlers = @Config.get('TicketCreateFormHandler')
 
     groupFilter = App.Config.get('customer_ticket_create_group_ids')
     if groupFilter
@@ -37,48 +38,48 @@ class Index extends App.ControllerContent
     )
 
     new App.ControllerForm(
-      el:       @el.find('.ticket-form-top')
-      form_id:  @form_id
-      model:    App.Ticket
-      screen:   'create_top'
-      handlers: [
-        @ticketFormChanges
-      ]
-      filter:    @formMeta.filter
-      autofocus: true
-      params:    defaults
+      el:             @el.find('.ticket-form-top')
+      form_id:        @form_id
+      model:          App.Ticket
+      screen:         'create_top'
+      handlersConfig: handlers
+      filter:         @formMeta.filter
+      formMeta:       @formMeta
+      autofocus:      true
+      params:         defaults
     )
 
     new App.ControllerForm(
-      el:       @el.find('.article-form-top')
-      form_id:  @form_id
-      model:    App.TicketArticle
-      screen:   'create_top'
-      params:   defaults
+      el:             @el.find('.article-form-top')
+      form_id:        @form_id
+      model:          App.TicketArticle
+      screen:         'create_top'
+      filter:         @formMeta.filter
+      formMeta:       @formMeta
+      params:         defaults
+      handlersConfig: handlers
     )
     new App.ControllerForm(
-      el:       @el.find('.ticket-form-middle')
-      form_id:  @form_id
-      model:    App.Ticket
-      screen:   'create_middle'
-      handlers: [
-        @ticketFormChanges
-      ]
-      filter:     @formMeta.filter
-      params:     defaults
-      noFieldset: true
+      el:             @el.find('.ticket-form-middle')
+      form_id:        @form_id
+      model:          App.Ticket
+      screen:         'create_middle'
+      filter:         @formMeta.filter
+      formMeta:       @formMeta
+      params:         defaults
+      noFieldset:     true
+      handlersConfig: handlers
     )
     if !_.isEmpty(App.Ticket.attributesGet('create_bottom', false, true))
       new App.ControllerForm(
-        el:       @el.find('.ticket-form-bottom')
-        form_id:  @form_id
-        model:    App.Ticket
-        screen:   'create_bottom'
-        handlers: [
-          @ticketFormChanges
-        ]
-        filter:    @formMeta.filter
-        params:    defaults
+        el:             @el.find('.ticket-form-bottom')
+        form_id:        @form_id
+        model:          App.Ticket
+        screen:         'create_bottom'
+        handlersConfig: handlers
+        filter:         @formMeta.filter
+        formMeta:       @formMeta
+        params:         defaults
       )
 
     new App.ControllerDrox(
diff --git a/app/assets/javascripts/app/controllers/organization_profile.coffee b/app/assets/javascripts/app/controllers/organization_profile.coffee
index f8363e745..1386f2f8c 100644
--- a/app/assets/javascripts/app/controllers/organization_profile.coffee
+++ b/app/assets/javascripts/app/controllers/organization_profile.coffee
@@ -48,7 +48,7 @@ class App.OrganizationProfile extends App.Controller
     new Object(
       el:        elLocal.find('.js-object-container')
       object_id: organization.id
-      task_key:  @task_key
+      taskKey:  @taskKey
     )
 
     new ActionRow(
@@ -135,7 +135,7 @@ class Object extends App.ObserverController
   render: (organization) =>
 
     # update taskbar with new meta data
-    App.TaskManager.touch(@task_key)
+    App.TaskManager.touch(@taskKey)
 
     # get display data
     organizationData = []
diff --git a/app/assets/javascripts/app/controllers/search.coffee b/app/assets/javascripts/app/controllers/search.coffee
index 67e9c009a..4c66dcf2f 100644
--- a/app/assets/javascripts/app/controllers/search.coffee
+++ b/app/assets/javascripts/app/controllers/search.coffee
@@ -15,12 +15,12 @@ class App.Search extends App.Controller
     # check authentication
     @authenticateCheckRedirect()
 
-    current = App.TaskManager.get(@task_key).state
+    current = App.TaskManager.get(@taskKey).state
     if current && current.query
       @query = current.query
 
     # update taskbar with new meta data
-    App.TaskManager.touch(@task_key)
+    App.TaskManager.touch(@taskKey)
 
     @throttledSearch = _.throttle @search, 200
 
@@ -66,7 +66,7 @@ class App.Search extends App.Controller
     # nothing
 
   render: ->
-    currentState = App.TaskManager.get(@task_key).state
+    currentState = App.TaskManager.get(@taskKey).state
     if !@query
       if currentState && currentState.query
         @query = currentState.query
@@ -179,12 +179,12 @@ class App.Search extends App.Controller
       )
 
   updateTask: =>
-    current = App.TaskManager.get(@task_key).state
+    current = App.TaskManager.get(@taskKey).state
     return if !current
     current.query = @query
     current.model = @model
-    App.TaskManager.update(@task_key, { state: current })
-    App.TaskManager.touch(@task_key)
+    App.TaskManager.update(@taskKey, { state: current })
+    App.TaskManager.touch(@taskKey)
 
   updateFilledClass: ->
     @searchInput.toggleClass 'is-empty', !@searchInput.val()
diff --git a/app/assets/javascripts/app/controllers/taskbar_widget.coffee b/app/assets/javascripts/app/controllers/taskbar_widget.coffee
index f61dbc6b4..74f33b954 100644
--- a/app/assets/javascripts/app/controllers/taskbar_widget.coffee
+++ b/app/assets/javascripts/app/controllers/taskbar_widget.coffee
@@ -45,8 +45,8 @@ class App.TaskbarWidget extends App.CollectionController
       @queue.push ['destroy', tasks]
       @uIRunner()
     )
-    @bind('taskCollectionOrderSet', (task_keys) =>
-      @collectionOrderSet(task_keys)
+    @bind('taskCollectionOrderSet', (taskKeys) =>
+      @collectionOrderSet(taskKeys)
     )
 
   itemGet: (key) ->
diff --git a/app/assets/javascripts/app/controllers/ticket_overview.coffee b/app/assets/javascripts/app/controllers/ticket_overview.coffee
index 40f9b7a7e..7cf83f63e 100644
--- a/app/assets/javascripts/app/controllers/ticket_overview.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_overview.coffee
@@ -1249,15 +1249,15 @@ class BulkForm extends App.Controller
 
     @html App.view('agent_ticket_view/bulk')()
 
+    handlers = @Config.get('TicketZoomFormHandler')
+
     new App.ControllerForm(
       el: @$('#form-ticket-bulk')
       model:
         configure_attributes: @configure_attributes_ticket
         className:            'create'
         labelClass:           'input-group-addon'
-      handlers: [
-        @ticketFormChanges
-      ]
+      handlersConfig: handlers
       params:     {}
       filter:     @formMeta.filter
       noFieldset: true
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom.coffee b/app/assets/javascripts/app/controllers/ticket_zoom.coffee
index fd0c7a1ec..9ffcec817 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom.coffee
@@ -59,6 +59,13 @@ class App.TicketZoom extends App.Controller
       @initSpoolSent = true
     )
 
+    # listen to rerender sidebars
+    @bind('ui::ticket::sidebarRerender', (data) =>
+      return if data.taskKey isnt @taskKey
+      return if !@sidebarWidget
+      @sidebarWidget.render(@formCurrent())
+    )
+
   fetchMayBe: (data) =>
     if @ticketUpdatedAtLastCall
       if new Date(data.updated_at).getTime() is new Date(@ticketUpdatedAtLastCall).getTime()
@@ -155,7 +162,7 @@ class App.TicketZoom extends App.Controller
     # notify if ticket changed not by my self
     if @initFetched
       if newTicketRaw.updated_by_id isnt @Session.get('id')
-        App.TaskManager.notify(@task_key)
+        App.TaskManager.notify(@taskKey)
     @initFetched = true
 
     if !@doNotLog
@@ -304,7 +311,7 @@ class App.TicketZoom extends App.Controller
     @positionPageHeaderStop()
 
   muteTask: =>
-    App.TaskManager.mute(@task_key)
+    App.TaskManager.mute(@taskKey)
 
   shortcutNavigationStart: =>
     @articlePager =
@@ -391,7 +398,7 @@ class App.TicketZoom extends App.Controller
   render: (local) =>
 
     # update taskbar with new meta data
-    App.TaskManager.touch(@task_key)
+    App.TaskManager.touch(@taskKey)
 
     if !@renderDone
       @renderDone = true
@@ -414,7 +421,7 @@ class App.TicketZoom extends App.Controller
         object_id:   @ticket_id
         overview_id: @overview_id
         el:          elLocal.find('.js-ticketTitleContainer')
-        task_key:    @task_key
+        taskKey:    @taskKey
       )
 
       new App.TicketZoomMeta(
@@ -427,7 +434,7 @@ class App.TicketZoom extends App.Controller
         el:          elLocal.find('.js-attributeBar')
         overview_id: @overview_id
         callback:    @submit
-        task_key:    @task_key
+        taskKey:    @taskKey
       )
       #if @shown
       #  @attributeBar.start()
@@ -441,7 +448,7 @@ class App.TicketZoom extends App.Controller
         formMeta:  @formMeta
         form_id:   @form_id
         defaults:  @taskGet('article')
-        task_key:  @task_key
+        taskKey:  @taskKey
         ui:        @
       )
 
@@ -469,14 +476,14 @@ class App.TicketZoom extends App.Controller
         el:        elLocal.find('.ticketZoom-header')
       )
 
-      @sidebar = new App.TicketZoomSidebar(
+      @sidebarWidget = new App.TicketZoomSidebar(
         el:           elLocal
         sidebarState: @sidebarState
         object_id:    @ticket_id
         model:        'Ticket'
         query:        @query
         taskGet:      @taskGet
-        task_key:     @task_key
+        taskKey:      @taskKey
         formMeta:     @formMeta
         markForm:     @markForm
         tags:         @tags
@@ -486,12 +493,20 @@ class App.TicketZoom extends App.Controller
       # check if autolock is needed
       if @Config.get('ticket_auto_assignment') is true
         if @ticket.owner_id is 1 && @permissionCheck('ticket.agent') && @ticket.editable('full')
-          ticket_auto_assignment_selector = @Config.get('ticket_auto_assignment_selector')
-          if App.Ticket.selector(@ticket, ticket_auto_assignment_selector['condition'])
-            assign = =>
-              @ticket.owner_id = App.Session.get('id')
-              @ticket.save()
-            @delay(assign, 800, "ticket-auto-assign-#{@ticket.id}")
+          userIdsIgnore = @Config.get('ticket_auto_assignment_user_ids_ignore') || []
+          userIgnored = false
+          currentUserId = App.Session.get('id')
+          for userIdIgnore in userIdsIgnore
+            if userIdIgnore.toString() is currentUserId.toString()
+              userIgnored = true
+              break
+          if userIgnored is false
+            ticket_auto_assignment_selector = @Config.get('ticket_auto_assignment_selector')
+            if App.Ticket.selector(@ticket, ticket_auto_assignment_selector['condition'])
+              assign = =>
+                @ticket.owner_id = App.Session.get('id')
+                @ticket.save()
+              @delay(assign, 800, "ticket-auto-assign-#{@ticket.id}")
 
     # render init content
     if elLocal
@@ -503,8 +518,8 @@ class App.TicketZoom extends App.Controller
         ticket_article_ids: @ticket_article_ids
       )
 
-    if @sidebar
-      @sidebar.reload(
+    if @sidebarWidget
+      @sidebarWidget.reload(
         tags: @tags
         links: @links
       )
@@ -747,13 +762,13 @@ class App.TicketZoom extends App.Controller
       ticket: ticket
       callback:
         tagAdd: (tag) =>
-          return if !@sidebar
-          return if !@sidebar.reload
-          @sidebar.reload(tagAdd: tag, source: 'macro')
+          return if !@sidebarWidget
+          return if !@sidebarWidget.reload
+          @sidebarWidget.reload(tagAdd: tag, source: 'macro')
         tagRemove: (tag) =>
-          return if !@sidebar
-          return if !@sidebar.reload
-          @sidebar.reload(tagRemove: tag)
+          return if !@sidebarWidget
+          return if !@sidebarWidget.reload
+          @sidebarWidget.reload(tagRemove: tag)
     )
 
     # set defaults
@@ -854,8 +869,8 @@ class App.TicketZoom extends App.Controller
         # reset form after save
         @reset()
 
-        if @sidebar
-          @sidebar.commit()
+        if @sidebarWidget
+          @sidebarWidget.commit()
 
         if taskAction is 'closeNextInOverview'
           if @overview_id
@@ -868,7 +883,7 @@ class App.TicketZoom extends App.Controller
                 next = list.tickets[current_position]
                 if next
                   # close task
-                  App.TaskManager.remove(@task_key)
+                  App.TaskManager.remove(@taskKey)
 
                   # open task via task manager to get overview information
                   App.TaskManager.execute(
@@ -886,7 +901,7 @@ class App.TicketZoom extends App.Controller
           taskAction = 'closeTab'
 
         if taskAction is 'closeTab'
-          App.TaskManager.remove(@task_key)
+          App.TaskManager.remove(@taskKey)
           nextTaskUrl = App.TaskManager.nextTaskUrl()
           if nextTaskUrl
             @navigate nextTaskUrl
@@ -943,8 +958,8 @@ class App.TicketZoom extends App.Controller
     @$('.tabsSidebar-tab[data-tab="ticket"]').removeClass('is-changed')
 
   taskGet: (area) =>
-    return {} if !App.TaskManager.get(@task_key)
-    @localTaskData = App.TaskManager.get(@task_key).state || {}
+    return {} if !App.TaskManager.get(@taskKey)
+    @localTaskData = App.TaskManager.get(@taskKey).state || {}
     if area
       if !@localTaskData[area]
         @localTaskData[area] = {}
@@ -955,18 +970,18 @@ class App.TicketZoom extends App.Controller
 
   taskUpdate: (area, data) =>
     @localTaskData[area] = data
-    App.TaskManager.update(@task_key, { 'state': @localTaskData })
+    App.TaskManager.update(@taskKey, { 'state': @localTaskData })
 
   taskUpdateAll: (data) =>
     @localTaskData = data
-    App.TaskManager.update(@task_key, { 'state': @localTaskData })
+    App.TaskManager.update(@taskKey, { 'state': @localTaskData })
 
   # reset task state
   taskReset: =>
     @localTaskData =
       ticket:  {}
       article: {}
-    App.TaskManager.update(@task_key, { 'state': @localTaskData })
+    App.TaskManager.update(@taskKey, { 'state': @localTaskData })
 
 class TicketZoomRouter extends App.ControllerPermanent
   requiredPermission: ['ticket.agent', 'ticket.customer']
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom/article_new.coffee b/app/assets/javascripts/app/controllers/ticket_zoom/article_new.coffee
index d8bc066ba..2795d7e46 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom/article_new.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom/article_new.coffee
@@ -519,7 +519,7 @@ class App.TicketZoomArticleNew extends App.Controller
     # detect current signature (use current group_id, if not set, use ticket.group_id)
     ticketCurrent = App.Ticket.fullLocal(@ticket_id)
     group_id = ticketCurrent.group_id
-    task = App.TaskManager.get(@task_key)
+    task = App.TaskManager.get(@taskKey)
     if task && task.state && task.state.ticket && task.state.ticket.group_id
       group_id = task.state.ticket.group_id
     group = App.Group.find(group_id)
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom/attribute_bar.coffee b/app/assets/javascripts/app/controllers/ticket_zoom/attribute_bar.coffee
index 6c8de0b6e..a177d46cc 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom/attribute_bar.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom/attribute_bar.coffee
@@ -50,8 +50,8 @@ class App.TicketZoomAttributeBar extends App.Controller
 
     if @permissionCheck('ticket.agent')
       @taskbarWatcher = new App.TaskbarWatcher(
-        task_key: @task_key
-        el:       localeEl.filter('.js-avatars')
+        taskKey: @taskKey
+        el:      localeEl.filter('.js-avatars')
       )
 
     @html localeEl
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom/form_hander_dependencies.coffee b/app/assets/javascripts/app/controllers/ticket_zoom/form_hander_dependencies.coffee
new file mode 100644
index 000000000..6f68852a8
--- /dev/null
+++ b/app/assets/javascripts/app/controllers/ticket_zoom/form_hander_dependencies.coffee
@@ -0,0 +1,32 @@
+class TicketZoomFormHanderDependencies
+
+  # central method, is getting called on every ticket form change
+  @run: (params, attribute, attributes, classname, form, ui) ->
+    return if !ui.formMeta
+    return if !ui.formMeta.dependencies
+    return if !ui.formMeta.dependencies[attribute.name]
+    dependency = ui.formMeta.dependencies[attribute.name][ parseInt(params[attribute.name]) ]
+    if !dependency
+      dependency = ui.formMeta.dependencies[attribute.name][ params[attribute.name] ]
+    if dependency
+      for fieldNameToChange of dependency
+        filter = []
+        if dependency[fieldNameToChange]
+          filter = dependency[fieldNameToChange]
+
+        # find element to replace
+        for item in attributes
+          if item.name is fieldNameToChange
+            item['filter'] = {}
+            item['filter'][ fieldNameToChange ] = filter
+            item.default = params[item.name]
+            #if !item.default
+            #  delete item['default']
+            newElement = ui.formGenItem(item, classname, form)
+
+        # replace new option list
+        if newElement
+          form.find('[name="' + fieldNameToChange + '"]').closest('.form-group').replaceWith(newElement)
+
+App.Config.set('100-ticketFormChanges', TicketZoomFormHanderDependencies, 'TicketZoomFormHandler')
+App.Config.set('100-ticketFormChanges', TicketZoomFormHanderDependencies, 'TicketCreateFormHandler')
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom/sidebar.coffee b/app/assets/javascripts/app/controllers/ticket_zoom/sidebar.coffee
index 416d16742..78491dbdb 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom/sidebar.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom/sidebar.coffee
@@ -25,6 +25,7 @@ class App.TicketZoomSidebar extends App.ObserverController
           ticket:   ticket
           query:    @query
           taskGet:  @taskGet
+          taskKey:  @taskKey
           formMeta: @formMeta
           markForm: @markForm
           tags:     @tags
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom/sidebar_idoit.coffee b/app/assets/javascripts/app/controllers/ticket_zoom/sidebar_idoit.coffee
index a3a8aad7d..931a5d39c 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom/sidebar_idoit.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom/sidebar_idoit.coffee
@@ -18,7 +18,7 @@ class SidebarIdoit extends App.Controller
 
   changeObjects: =>
     new App.IdoitObjectSelector(
-      task_key: @task_key
+      taskKey: @taskKey
       container: @el.closest('.content')
       callback: (objectIds, objectSelectorUi) =>
         if @ticket && @ticket.id
@@ -54,7 +54,7 @@ class SidebarIdoit extends App.Controller
 
     # ajax call to show items
     @ajax(
-      id:    "idoit-#{@task_key}"
+      id:    "idoit-#{@taskKey}"
       type:  'POST'
       url:   "#{@apiPath}/integration/idoit"
       data:  JSON.stringify(method: 'cmdb.objects', filter: ids: @objectIds)
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom/sidebar_ticket.coffee b/app/assets/javascripts/app/controllers/ticket_zoom/sidebar_ticket.coffee
index 76bfeff9e..e25c1e833 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom/sidebar_ticket.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom/sidebar_ticket.coffee
@@ -12,6 +12,7 @@ class Edit extends App.ObserverController
     ticketState = App.TicketState.find(defaults.state_id).name
 
     taskState = @taskGet('ticket')
+    handlers = @Config.get('TicketZoomFormHandler')
 
     if !_.isEmpty(taskState)
       defaults = _.extend(defaults, taskState)
@@ -20,29 +21,27 @@ class Edit extends App.ObserverController
        followUpPossible != 'new_ticket' ||
        @permissionCheck('admin') || @permissionCheck('ticket.agent')
       new App.ControllerForm(
-        elReplace: @el
-        model:     App.Ticket
-        screen:    'edit'
-        handlers:  [
-          @ticketFormChanges
-        ]
-        filter:     @formMeta.filter
-        params:     defaults
-        isDisabled: !ticket.editable()
-        #bookmarkable: true
+        elReplace:      @el
+        model:          App.Ticket
+        screen:         'edit'
+        handlersConfig: handlers
+        filter:         @formMeta.filter
+        formMeta:       @formMeta
+        params:         defaults
+        isDisabled:     !ticket.editable()
+        #bookmarkable:  true
       )
     else
       new App.ControllerForm(
-        elReplace: @el
-        model:     App.Ticket
-        screen:    'edit'
-        handlers:  [
-          @ticketFormChanges
-        ]
-        filter:     @formMeta.filter
-        params:     defaults
-        isDisabled: ticket.editable()
-        #bookmarkable: true
+        elReplace:      @el
+        model:          App.Ticket
+        screen:         'edit'
+        handlersConfig: handlers
+        filter:         @formMeta.filter
+        formMeta:       @formMeta
+        params:         defaults
+        isDisabled:     ticket.editable()
+        #bookmarkable:  true
       )
 
     @markForm(true)
@@ -137,7 +136,7 @@ class SidebarTicket extends App.Controller
   showTicketMerge: =>
     new App.TicketMerge(
       ticket:    @ticket
-      task_key:  @task_key
+      taskKey:   @taskKey
       container: @el.closest('.content')
     )
 
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom/taskbar_watcher.coffee b/app/assets/javascripts/app/controllers/ticket_zoom/taskbar_watcher.coffee
index 71962dffa..f1b59e42b 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom/taskbar_watcher.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom/taskbar_watcher.coffee
@@ -1,8 +1,8 @@
 class App.TaskbarWatcher extends App.Controller
   constructor: ->
     super
-    @subscribeId = App.TaskManager.preferencesSubscribe(@task_key, @render)
-    App.TaskManager.preferencesTrigger(@task_key)
+    @subscribeId = App.TaskManager.preferencesSubscribe(@taskKey, @render)
+    App.TaskManager.preferencesTrigger(@taskKey)
 
   release: =>
     return if !@subscribeId
@@ -53,7 +53,7 @@ class App.TaskbarWatcher extends App.Controller
   start: =>
     @intervalId = @interval(
       =>
-        App.TaskManager.preferencesTrigger(@task_key)
+        App.TaskManager.preferencesTrigger(@taskKey)
       5 * 60000
       'ticket-watcher-interval'
     )
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom/title.coffee b/app/assets/javascripts/app/controllers/ticket_zoom/title.coffee
index 3840243c4..0952b6f18 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom/title.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom/title.coffee
@@ -28,9 +28,9 @@ class App.TicketZoomTitle extends App.ObserverController
 
     ticket.save()
 
-    App.TaskManager.mute(@task_key)
+    App.TaskManager.mute(@taskKey)
 
     # update taskbar with new meta data
-    App.TaskManager.touch(@task_key)
+    App.TaskManager.touch(@taskKey)
 
     App.Event.trigger('overview:fetch')
diff --git a/app/assets/javascripts/app/controllers/user_profile.coffee b/app/assets/javascripts/app/controllers/user_profile.coffee
index cc734eec4..5e2d7bc85 100644
--- a/app/assets/javascripts/app/controllers/user_profile.coffee
+++ b/app/assets/javascripts/app/controllers/user_profile.coffee
@@ -55,7 +55,7 @@ class App.UserProfile extends App.Controller
     new Object(
       el:        elLocal.find('.js-object-container')
       object_id: user.id
-      task_key:  @task_key
+      taskKey:  @taskKey
     )
 
     new ActionRow(
@@ -153,7 +153,7 @@ class Object extends App.ObserverController
   render: (user) =>
 
     # update taskbar with new meta data
-    App.TaskManager.touch(@task_key)
+    App.TaskManager.touch(@taskKey)
 
     # get display data
     userData = []
diff --git a/app/assets/javascripts/app/lib/app_post/task_manager.coffee b/app/assets/javascripts/app/lib/app_post/task_manager.coffee
index d9b22e9fc..596c18f9c 100644
--- a/app/assets/javascripts/app/lib/app_post/task_manager.coffee
+++ b/app/assets/javascripts/app/lib/app_post/task_manager.coffee
@@ -281,6 +281,7 @@ class _taskManagerSingleton extends App.Controller
       @domStore[domKey] = { el: el }
     params_app['el'] = el
     params_app['task_key'] = params.key
+    params_app['taskKey'] = params.key
     if !params.show
       params_app['doNotLog'] = 1
 
@@ -555,18 +556,19 @@ class _taskManagerSingleton extends App.Controller
         @tasksToUpdate[task.key] = 'inProgress'
         taskUpdate = App.Taskbar.findByAttribute('key', task.key)
         if !taskUpdate
-          taskUpdate = new App.Taskbar
+          delete ui.tasksToUpdate[@key]
+          continue
         taskUpdate.load(task)
         if taskUpdate.isOnline()
           ui = @
           taskUpdate.save(
             done: ->
-              if ui.tasksToUpdate[ @key ] is 'inProgress'
-                delete ui.tasksToUpdate[ @key ]
+              if ui.tasksToUpdate[@key] is 'inProgress'
+                delete ui.tasksToUpdate[@key]
             fail: ->
               ui.log 'error', "can't update task", @
-              if ui.tasksToUpdate[ @key ] is 'inProgress'
-                delete ui.tasksToUpdate[ @key ]
+              if ui.tasksToUpdate[@key] is 'inProgress'
+                delete ui.tasksToUpdate[@key]
           )
 
   taskDestroy: (task) ->
@@ -584,13 +586,13 @@ class _taskManagerSingleton extends App.Controller
 
     # destroy task in backend
     delete @tasksToUpdate[task.key]
+    delete @tasksPreferences[task.key]
 
     # if task isnt already stored on backend
     return if !task.id
+    return if !App.Taskbar.exists(task.id)
     App.Taskbar.destroy(task.id)
 
-    delete @tasksPreferences[task.key]
-
   tasksAutoCleanupDelay: =>
     delay = =>
       @tasksAutoCleanup()