If you want to delete a user from the repository, make the user inactive, or rename a user, you can assign objects owned by that user to another user. For example, to change the user name of a particular user, you have to create a new user and assign the objects that belonged to the old user name to the new user.
To reassign objects to another user:
Navigate to Administration > User Management > Users.
Select the user whose objects are being reassigned and then select Tools > Reassign User.
The Reassign User page is displayed.
Enter information on the Reassign Userpage:
Name: Displays the name of the current repository.
Reassign: Type the name of the user to which to reassign the current user’s objects or click Select User.
Run the Reassign job: Select when to run the reassign job. Options are At next job execution and Now.
Checked Out Objects: Indicate whether to unlock check-out objects or ignore them.
Report Results: Indicate whether to save changes and report results or just report results.
Click OK.