Howto configure geofencing?

The documentation I can find on configuring Geo fencing uses the classic app which I have no problem with but the fly out menu on the currently available classic app does not seem to be available. Is there an updated document on how to configure Geo fencing question

I want to be able to arm and disarm the alarm using the home monitor and my Galaxy note 9. I would like to configure it so that if my note 9 leaves but my wife’s stays here the system goes into armed stay mode if both songs leave it goes into armed away mode and of course disarms upon return.