Admin Privileges

My workflow calls for an admin user to be able to view any activity (form) at anytime, and bring that process to an end state.  I currently have a datalist that holds all of the workflow process records, and want to include a column of hyperlinks that leads the admin to the specific activity and can end that process immediately.  I do not want to actually delete the process, just bring it to an ending state. What is the best way to do this? Thanks!