Education block - How to allow gaps in class timetables
discontinuous educational block
Please see this article Kontrola medzier/okien v rozvrhu triedy
for better understanding, how ASC Timetables places lessons into automatic "Educational block".
If you wish to allow gaps in classes timetables (and it means also in students timetables) you can set in Class - Constraints - Advanced - Discontinuous educational block.
See also:
Blok vyučovania - umožňuje niektorým triedam neskorší príchod alebo skorší odchod.
Class can have max 2 gaps per day
Student can have max 3 gaps per day