When selecting any Meta-Attributes, the correct editor is displayed. Currently provided editors are
It is the same as default :
It is provided for Meta-Attributes identified as Boolean.
It is including also a Boolean Editor, and it is used for some Meta-Attributes provided by Minyaa, related to permissions on issue operations.
It is provided for each defined User By Workflow Step customfield.
It is provided at Workflow Step level in order to define the list of allowed Worklog Types.