Help on edit user

Help on edit user

Hello,
I've Service Desk Plus 7.0 and I would like to edit a user, but this user as SADmin propertie on him, how can I edit him to take that propertie and to access that user, I'm also SADmin but I'm unable to edit him our the administrator user, also I try it with administrator access to change this user with no sucess.
How can I edit ? in SQL ? which table?
 
Best regards.

                  New to ADSelfService Plus?