Automatically forward request to workflow inbox

line manager is not available the request is not handled and just sits in the workflow inbox. If the line manager absence is unexpected they will not have set up a substitution. (This also happens when the line manager forgets to set this up before they go on leave.)

At the moment we have to log into the line managers account and manually set up the substitution. There are issues of data protection and so is becoming a great problem.

Is there a way of setting up the workflow to automatically forward the request to another workflow inbox after 72 hours and without the need for any manual intervention?