I am trying to restrict access to who can work on an assignment in Pega. For instance, I have a workgroup of 6 operators and all are apart of the same workbasket. I would like only 3 of them to work on the first assignment, and the other 3 to work on second assignment. They are all apart of the same workgroup, and the issue is that all 6 of them can work on both assignments. How can I restrict access to where only a set of operators can only perform a specific assignment and not the others? Thank you.