I'm not sure if impersonate will answer our question here. We are looking for a way to delegate work to users who are not admins using the out of office functionality.  

I have a need to allow users to delegate items from their inbox to other users when they are out of office. In our environment, when selecting the approver in the settings>out of office menu we can only assigned to admins. Is there a way that we can assign to other non-admin users? I have not found ...