If I understand what you’re asking, you want to arm/disarm the system with a button? I don’t think that’ possible right now and with the new SHM limitation of not integrating with apps if you don’t see it in the app it can’t be done.
You can try a different security app if you have access to rboy apps, it’s a little more flexible and allows to arm/disarm the app using a variety of options including switches. [RELEASE] Security System: Intruder Alert with Actions - Entry Delay, Exit Delay, Countdowns, Keypads, Lights, Alarms, Pictures/Cameras, Routines