Using Web Image Monitor, you can log in to the machine and change the administrator settings. For details about logging in and logging out with administrator authentication, see Administrator Login Method and Administrator Logout Method.
Log in as an administrator from Web Image Monitor.
Point to [Device Management], and then click [Configuration].
Click [Administrator Authentication Management] or [Program/Change Administrator] under "Device Settings".
Change the settings as desired.
For details about Web Image Monitor, see Web Image Monitor Help.