constraint to club student breaktime with other gaps during a day

[Nagendra]

Hi, is it possible to add some constraint to club student breaktime with other gaps during a day with some weight? So that the break time can be more for students instead of having breaks between lectures.

[Liviu Lalescu]

Sorry, but I don't understand.

[Nagendra]

If the break (Lunch hour) is scheduled at the 5th hour, students don't have any activity at 1st and 7th hours, how to implement a constraint to have no-activity hours adjacent to break time. i.e to have all three (lunch break and no-activity hours) together like
4th, 5th & 6th or
5th, 6th & 7th or
3rd, 4th & 5th

I want to implement a constraint so that, students can get more free time during lunch.

[Liviu Lalescu]

I think you can add an activity with duration 3 and no teachers for these students. Preferred time slots as necessary.

[Nagendra]

I think I can't do that. As, every batch may not be getting "2" non-activity hours. If at all there are any non-activity hours, then I want them to be along break time.

[Liviu Lalescu]

Then maybe this: instead of break, add a dummy activity with duration 1, preferred slot 5th. Then dummy activity, preferred slot 1st or 4th, then dummy activity, preferred slot 6th or 7th.