When  you check return, you should see the critical diagnostics > Click on that and it should present the input area to do that item. You can actually scroll (right or left) through those input areas for all diagnostics. 

Thank you.  Unfortunately, I am able to access the input screen and input a contact name.  However, the diagnostic persists and Proconnect does not seem to recognize that I have inputted anything (even though it is there).