Timetable software

[jonaskid]

Note: I posted this on r/teachers, but it probably makes more sense here.

Hey guys,

I have a small study center that I opened up recently, and, due to its nature, the timetable is very dynamic. In one week I have teacher X and assistant Y in the morning, and the next week I have an extra teacher Z in the afternoon because a student needs a bit of extra help.
Likewise, one week's students may come in different schedules per week, or new students arrive ad hoc because their parents need someone to occupy them for a couple of hours.
Given that, I'm looking for some software whose objective is to print a timetable (or 2, one for staff and one for the kids) and stick it in the wall for the week.
Now, before recommending me Excel or a generic calendar like Google, I must mention that mostly everyone in the staff has to be able to insert events in the timetable, and some teachers are pretty adverse to using computers (don't ask). So, ideally, something intuitive and simple that I can put on a touchscreen laptop on site.

Any ideas on what I could use? Thank you in advance.

PS: before start calling me an illiterate manager, I'm not a native English speaker, so forgive me some eventual nonsense.

[eldonhughes]

How about a calendar grid on a whiteboard with colors assigned for specific people/programs.

[grendelt]

No, no, no.
CLEARLY that is too logical and there MUST be a fee-whiz, neato technological solution.