Even if you change a user code, the counter value will not be cleared.
Press [Home] () at the bottom of the screen in the center.
Press the [User Tools] () icon on the [Home] screen.
Press [Address Book Management].
Check that [Program / Change] is selected.
Select the user whose user code you want to change.
Press the name key, or enter the registered number using the number keys.
You can search by the registered name or user code.
Press [Auth. Info].
Press [Change] under "User Code".
Enter the new user code using the number keys, and then press the [] key.
Press the key to select the functions to enable them.
Press [OK].
Press [Exit].
Press [Home] () at the bottom of the screen in the center.
To change the name, key display and title, see Changing a registered name.