QM - Allow the ability to determine who receives an agent's "Request Further Review" rather than all "challenges" assign to one person

Currently, QM "Request Further Review" set up only allows for 1 person to be designated to receive these "challenges" and the only choices are either the original evaluator or one other person (in our case the QM manager) to receive all the requests. The request is to allow multiple tiers to review the "challenges". The initial request should be directed to the agent's immediate supervisor. In some instances the supervisor may want to escalate the challenge to the request for review to the QM Manager.