In BPM is there anyway to set Actor Mapping on task in after task is create?

Hi,

In the Instantiation from, I have a list of department (the same as group in Organization). After user choose a group and submit the form, I would like to have only member of that group can take the task, the same way as setting Actor Mapping in Configuration.

How can I do this?

OK, I have found the solution in tab General > Actors, I can set "Multi User Filters" and write a groovy script to gather and return list of  username from Group name.