One or a group of teachers take 2 periods off during the day, but they still ran

[ngoctp29121982]

I want teachers to teach 1 or 2 subjects with a random break of 2 periods in the morning or afternoon or official mode, but they still teach the rest of the lessons for them to have a group meeting....
For example . : All the teachers of English and Geography are off Tuesday mornings for periods 4 and 5, but they still randomly have periods 1 or 2 or 3 or 1,2 or 2,3 or 1.3. I can't find Fet with this constraint.
I have left a fade attached below. I create constraint: Minimum number of lessons to be used for a given set of lessons. You can see for yourself, how to create the above binding. Thank Liviu

[Liviu Lalescu]

I am sorry, but I do not understand your words. Also, you forgot to attach a file.

[ngoctp29121982]

For example. : A group of English and chemistry teachers... are all off at 08:00 and 09:00 but they still have a random time of 10:00; 11:00; 12:00. I can't find Fet with this constraint.
I have left a fade attached below. You see help. Thank Liviu

[Liviu Lalescu]

I think you want like in the attached file.

[ngoctp29121982]

thank you if i just use 15.2 binding is it ok. because using extra teacher binding takes twice as long

[Liviu Lalescu]

I don't understand.

[ngoctp29121982]

thank you if I can just use the 15.2 lesson constraint, it's more convenient because using the teacher binding takes twice as long

[Liviu Lalescu]

Yes, I am using the 15.2 constraint, activities occupy min time slots from selection. If you want also not available times for these teachers, you need to add that.

[ngoctp29121982]

OK, Thank you Liviu