“Home” → the “School” card. On top: “Now” (the lesson on or what comes next) and “Timetable”: tap “Today”, “Tomorrow” or a weekday to see that day's lessons with their times, and under them “After school” — clubs and tutors.
Everything else below is folded sections: “From a photo or text”, “Bells”, “Subjects by day”, “After school”, “Special days”, “Holidays”, “Other children”, “The phone in lessons”. Folded, each shows the gist — say, “7 lessons, 08:20–14:45” or “None marked”. Tap a section to open and change it, tap again to fold it.
In a new timetable “Subjects by day” is open at once — that is where you start.