The most recent change we made was to the alarm (buzzer/mobile) logic:

instead of having individual rooms being able to be set between, no alarm or alarm, and a system wide: All alarm, custom, or none setting.

Now the system wide option is set by time rather than user, and switches to All between 9PM and 7AM and to custom outside of that (day time). The user can then set on or off (alarm or not) which takes into effect during the day if needed.