Hi there,
Perhaps I miss something but haven't found solution so far...
we need to automatically auto-assign issue right after its creation to a dynamically chosen user on the base of reporter.
To choose the assignee some mapping is needed. Every reporter has some default assignee independently in which project/component issue is created.
For example
User1 -> Assignee1
User2 -> Assignee1
User3 -> Assignee2
User4 -> Assignee2
User5 -> Assignee3
and so on...
Perhaps it could be done on the base of user properties but I have no clear idea or solution to this problem. Could you please help me? 
thanks!