Changing user permissions for a user

Hello Everyone,

We have a user named Ashley and her ID was "abusa" and all the access levels were assigned to this ID, now her id has been changed to "aclark" (new id created in GRC) and we want move all the access levels from abusa to aclark and later remove the id abusa.

We are on GRC 10.0 SP12.

Can you please let me know how can this be achieved?

Regards,

Bill