I chatted with Samsung support before getting their new button and they said it would be possible to setup an animation to change the state of Home Monitor from Armed (Stay) to Disarmed. We wanted to locate the button at the top of the stairs so anyone going downstair in the middle of the night can easily disable the alarm. At the moment I have 2 animations based on time which arm and disarm the system in case we forget - so animations should be able to do it. However the button only offers the option to change your location or turn on lights etc.
Maybe this is an oversight - if anyone can think of a way to accomplish this it would be most appreciated.