Restrict list of participants for a workflow task to users under a role?
Does any one know how to limit the participant choices for a workflow task to only those members listed under a role in a product or library container? I know this can be done as I see it done in the "Change Request workflow" where the participants for the task is limited to only those under the "Change Admin I" of the context. I try to do this in my workflow, copying I think every attribute of the "Change Request workflow" into mine to make it just like the CR workflow and it just does not work. It allows me to select anyone in the context - not just those under the role.
I am on Windchill 9.1, m050
Any help would be appreciated as this is very frustrating.

