Is there a way to visualize the geofencing status of all users at have an overview of which user is reported at home and which not?
you could assign a virtual switch to each user (or use a multiswitch) and have their switch turn on or off when they cross the fence.
Edit: note that you will not be able to see the status of virtual switches on the android app.
That is what I do - a virtual switch for both phones. I also have one call No One Home so I can see at a glance in VeraMate if things were properly armed (like cameras).