1. From the Admin console Home page, go to Users.
  2. In the Users list, find the user. 
  3. Hover over the user you want to rename and click Rename user Edit at the right:
  4. Change any of the following:
    • (Optional) First name and Last name
    • (Optional) Primary email address
    • (Optional) Email domain—If your organization has more than one domain, click the Down arrow Down Arrow next to the field to the right of the @ sign and choose a domain.

  5. Click Rename.