Admins can modify existing users' information, like name or email address.

• Go to Security > User Management
  
• Look up the user you wish to modify by (1) using the manila folder icon to view a list of users from which you can make a selection, (2) searching for the user by username, (3) searching by first name, (4) searching by last name, or (5) searching by email address.
  
• Make the necessary update(s) and save by clicking the floppy disk icon on the toolbar.