Once it's set up, nobody living with this thing needs to know about HPM, HSM, or the ☰ menu. Day to day, it's a small set of screens, reached by swiping or tapping — Home in the middle, Keypad one swipe right, and if you've configured them, Summary Dashboard one swipe left, then Controls Dashboard one swipe past that.

An at-a-glance summary, not something you interact with much. Three blocks:
ok.none until something's happened.Below that, buttons for the other screens — Keypad always, and Dashboard if you've configured one. That button leads to Summary Dashboard; Controls Dashboard, if you've set one up, is one swipe further still.
Swipe right from Home for Keypad · swipe left for whichever dashboards you've set up. With both configured, Summary comes first and Controls is one swipe further — each swipe only moves to the screen next to it.
Every button does the same thing as its matching swipe — tap Keypad or Dashboard on Home, or tap Home from the screens that have that button, if it's easier than swiping.
Leave the keypad on any screen — Keypad, Summary, Controls, or one of the ☰ menu screens — and after 30 seconds of no input it returns to Home by itself. You never have to remember to swipe back.