Let's say a business process task is currently assigned to personA but personA is currently out-of-office.  This task needs to be completed immediately and personB has the authority to approve this step in the process.  PersonA and personB are both Participant Licensed users.  Is there a way for personB to open and take ownership of that task from personA without System Administrator intervention?  So far I logged in as personA and viewed the task assigned to it.  I then copied the URL in the address bar, logged out and then logged back in as personB.  I then pasted the link into the address bar while logged in as personB and was directed to a page that said I was not authorized to view that task.