I've created a simple client event and assigned an Active Directory group as its destination.  When I kick off the process through the workspace and then check the 'worklists' (also in the Workspace) I see that the item is assigned directly to the Active Directory group, and not to the users within the group.  How do I make it so that ...

I have used a Client Event to assign an activity to a Role, which successfully creates worklist items for each user in the role.  What I want to do, more for an exercise than any business need, is to allow a user to 'Claim' said workitem, which removes it from everyone else's work list.  To do this, I've made a 'Claim' outcome of ...