Hello in our school of grade 1 -12. Grade 1 and 2 have full activity days on 2 Saturdays (alternative in a month). How do we plan for that.
Search the forum for "fortnightly".
https://lalescu.ro/liviu/fet/forum/index.php?topic=351.0 shows a way.
Or do the timetable for double week, marking a Saturday not available for the corresponding students sets.
There might be more solutions, based on how the students must have the same timetable each week or each second week.
and/or read https://www.timetabling.de/manual/FET-manual.en.html#id_36