How to: Set Up Substitute Approvers
To prevent documents from piling up and becoming overdue, the approval requester or the approver can delegate an approval task to a substitute. You typically use this feature if an approver is out of office and is unable to approve documents before the due date. You can set this up in the Approval User Setup window.
To delegate the approval process to a substitute
In the Search box, enter Approval Setup, and then choose the related link.
On the Home tab, in the Process group, choose User Setup.
In the Approval User Setup window, select a user, and in the Substitute field, enter the ID of the substitute. Choose the OK button.