The approval escalation process is designed to keep approvals moving, however approvers sometimes need a little more time to investigate or discuss a requisition before hitting approve.

To stop the approvals marching forward we have added the ability to pause a requisition during approvals which suspends the approval process and allows more time for consideration. 

Community administrators can enable this feature within the Approval Administration section.

More information can be found here:

How to Pause a Requisition