Press*5 then enter the master code. The alarm panel will beep, then enter two digit user number (example., 01 for user 1, 02 for user 2, 03 for user 3, etc). Then enter the four digit user code. Press # to exit. You can set individual codes for employees, cleaning staff, guests, etc. It is best practice that everyone has their own code and that user codes are not shared this way you can track who arms and disarms the system.