Understanding the Work with Approval Delegation Program (P43281)
You can delegate a person's approval authority to another person for the specified time period. You can check the delegation status for all delegations, or filter by Active or Expired statuses.
For example, you might delegate the authority if a person takes a vacation. When you transfer approval authority, the system temporarily changes all the selected approval routes to lead to the new approver.
When the approval authority is delegated to another person, the system redirects the new approval requests to the new approver with notification mails containing a link to the Approval Review program (P43081). The version of the P43081 program is specified in the Versions tab of the Work with Approval Delegation program (P43281).