SkieDo schedules switch on and off by themselves?
Yes. Once a schedule is attached to a group, each device changes its app set at the start and end of every window on its own. No teacher, warden or admin needs to press anything, and no connection is needed at that moment because the device holds the schedule locally.
The schedule is sent to the device with the rest of its signed policy. From then on the device reads its own clock and decides which window is active. It does not wait for a command from the dashboard at 9 pm or at the lesson bell.
That is why schedules still work when the network drops. The rules are cached on the device and keep applying offline. When connectivity returns, the device syncs straight away, which also picks up any changes you made in the meantime.
The clock is protected. Date and time are locked to automatic, with automatic time zone forced on, so a student cannot change the clock to extend a window. The device also uses a trusted clock for sync timing. If you change a schedule, the new version reaches devices on their next sync.
There are manual options when you need them. A teacher can lock a class from the group view during a lecture, extra apps can be added for one lesson, and an admin can change the app list or policy at any time. A panic lock exists for emergencies. A practical tip: do not rely on remembering to switch things. Put the daily rhythm into windows and keep manual actions for exceptions.