Go to the Go!Control Panel and select the ‘Home’ button. Press the ‘Security’ button. Press the ‘Menu’ button. Press the ‘Toolbox’ button. Press the ‘User Management’ button. Input the master code. Select a user code you want to change. Set a new four-digit code and enter it into the panel, to finish press ‘ok’. Repeat step 8 and press ‘ok’ to save the code. If you are having issues with your Panel, call Titan Alarm Customer Support 602-680-4567 or TEXT US 623-523-4849.