How to configure "Claim Functionality" for Project status approval workflow

I attempted to configure the Claim functionality, where a single user from the list of approvers can claim an approval notification and work on it exclusively. This setup is required for both the Project Status Approval Workflow and Contract Approval processes.

Although 25C is enabled on our client's instance, we are currently only receiving Approve/Reject notifications, and not the Claim notification as expected. Could you please assist us in resolving this?