how to restrict roles from selection criteria

[Sushil Guragain]

Hi WF Gurus,
 
We are using roles (AG) to establish possible agents for a task and allowing users to select an approver from the list. I have used wizard to add the select agent task. However, it seems to list the role also on the list of approvers along with the users associated. Could someone tell me how I can just list the users (assigned to those roles) on the selection screen without showing roles?
 
Thanks for your help,
 
Sushil 
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