Changing administrator account information
You can change the name and external email address associated with an administrator. You cannot change the username an administrator types when logging in to the control panel, but you can change the administrator's password.
To change an administrator's account information:
Go to the Edit Administrator page.
On the Edit Administrator page, change the following information as needed:
Name. The name of the administrator. Names have to be at least 1 character in length; a maximum of 128 characters is allowed.
External Email. An email address at which the administrator can be reached.
Click Save. Changes take effect immediately.