1. Have a Supervisor log into The Financial Edge. 
2. Go to Administration, Set Up System Security, and open the Group that the affected user belongs to.
3. Highlight Accounts Payable, highlight the marked Records, and click Options.
4. Mark Invoices and Credit memos.  Options are there to allow View, Add, Edit and Delete rights.  (If only want the user to View, unmark the Add, Edit and Delete options)
5. Save and Close the User Group. 

* Note: Remember to Exit and Sign out for the User rights to take effect.