Routing an assignment on the basis of skill level to an operator is based on the activity that you chose to.
1. ToSkilledGroup- Selection of Operator in a workgroup is random, and takes requisite skills into account while routing to the operator.
2. ToLeveledGroup - Routes the assignment to the workgroup operator who is best able to handle a task. This activity considers the routing characteristics of Availability, skill (requisite only) and least urgent worklist.