Consecutive days for teachers

[alhaq21]

Hello All, I want to give "max days per weak for a teacher" (which is 3 in my case) but I want FET to select consecutive 3 or (at the most 3 out 4 consecutive) days of the week. For example; It selects MON, THU and FRI, whereas I want it to select (say) WED, THU and FRI, or, three out of TUE, WED, THU and FRI. How do I tell FET to opt for such a constraint?

Many thanks in advance.

[Liviu Lalescu]

Use max days between activities of that teacher.

[alhaq21]

Thanks for the answer. Have already tried that, FET could not solve. I thought this way (3 out of 3 days OR 3 out of 4 days) would be a comparatively relaxed constraint than "max days between activities", if I could place it.

[Liviu Lalescu]

Then add max 4 days, and it will be like an OR of 3 or 4.