I’m sorry to disagree but In my view having more than one “MASTER” account puts the system more open to breaches (lost or stolen phone/tablet). It’s the same setup for every device! Your WiFi router only has one main login that lets you control everything! You would’nt want 15 login accounts on your router with full access would you??? (I sure as heck would not!). This is done for a reason - security…Guest accounts are setup for this reason. A guest pin will not allow you to change major system settings or delete components just as a router or any large company computer network/intranet. Long story short like a router your home security system has to be “secure”. This is the other reason (I read) that RING will not use Geo-fencing because if your phone is stolen and the theif knows where you live all he/she has to do is “go home” and your system is disarmed and ready for the taking! I have an app lock on my phone so no “joe” can access my RING app without a finger print or a pin code just in case someone does “jack” my phone!
Just another point of view and something you may have not considered…