In this video, we’ll look at how to add and remove users’ access codes on a DSC Maxsys 4020 commercial security alarm monitoring panel. This is applicable if you use your for your business or commercial security alarm system. You may need to add or remove users access codes on the keypad on your system from time-to-time as people are hired into your business, as keyholders change, due to changes to cleaning or maintenance staff or many other reasons. Here are step-by-step instructions on how add or remove users’ Access Codes using the keypad on your DSC Maxsys Commercial security alarm panel: