Can I give students a looser app set during break?
Yes. Add a break window with its own start and end and a wider list of allowed apps, such as a reader or a music app. Place it above the longer school-hours window so it wins while it runs. When break ends, the tablet returns to the lesson set on its own.
A fully locked day is hard on young students and often unnecessary. A short window of extra freedom helps. At break or lunch you might add an e-reader, a drawing app or approved games. When the break window ends the extras disappear.
The mechanism is the same as any other window. Days, start, end, apps. The detail that matters is order. The school-hours window already covers break, so the break window must sit above it. Skie checks windows from the top and the first match wins, so the break set applies while the break runs.
Be sure the break apps are in your published organisation store, since windows can only offer apps from there. Hidden is not deleted, so apps simply come back into view and go away again as the day moves. Student data in them is kept.
The change happens at the boundary. Expect the app set to switch at the scheduled minute rather than the second the bell rings, and give your timetable a short margin. Devices that are offline use the cached schedule against the locked automatic clock. A practical tip: keep break windows modest. A long, wide break means supervision, not technology, is the problem. Look at what students actually ask for during break, and add only that.