To manually change user codes from the panel, follow the steps listed below:
Press the Down arrow until you see System Programming on the screen and press OK
Enter your 4-digit master code and press OK.
You should see Access Codes displayed on the screen and then press OK.
The screen will display your master code. Use the arrow keys to scroll to the code you would like to update.
Press the OK button and the value section will begin to flash. Enter in your desired 4-digit code and press OK to save the changes
To return to the home screen, continuously press the Status button on the panel until the screen reverts to Disarmed.
Note: The Simon XT panel can hold up to 1 master code and 8 additional user codes.