How to check requisition approval hierarchy

I am needing help regarding the Requisition approval hierarchy. In our approval group called "SCLH Buyer Group For Expedite and General With Buyer Assistance" We have a total of 19 people and two are managers. Instead of receiving a notification for each requisition that goes to that group the managers only want to receive notifications if the requisition has not been approved and gets escalated. I am needing help on how to get the two managers into the escalation group.