Can you add different set-up slots for the timetable?

Is your feature request related to a problem? Please describe.

I'm frustrated when i want to compare the arrangement of timetables in a semester but i cannot do it unless i screenshot the current one, then move things around on the page.

Describe the solution you'd like

I wish there was way to directly compare the arrangements of timetable on the website to make everything easier. something like how in games, you have different save slots/team-line ups so i can always refer to the different arrangements ive made.

Describe alternatives you've considered

display of saved timetables/screenshots directly on the page. even if we cant go back to access it or modify it, at least the direct comparison is there. I know i can js windows key and split screen but lowkey would be nice if the website already has the function itself...

Additional context

Add any other context or screenshots about the feature request here.

The issue does not name any files, tests, or entry points. Start by locating the timetable page and its current arrangement state, then clarify whether saved slots must be editable, persistent, or only comparable. Done should include a defined way to create, switch between, compare, and possibly delete timetable arrangements.