A company has three levels of disputes. The sales representative identifies the incorrect commission amount and submits an inquiry. The inquiry is then reviewed by a manager who then escalates it to…

A company has three levels of disputes. The sales representative identifies the incorrect commission amount and submits an inquiry. The inquiry is then reviewed by a manager who then escalates it to the administrators to make changes based on the manager's reviewed notes. For this scenario, which group should be at the top of the inquiry tree?