Primary school pupil  have different bell times (and breaks) than secondary school pupil

COVID-19 case

There are two different sets for bell times, for secondary and primary schools:

Entered into program:

Time-off for classes of primary school:

Time-off for classes of secondary school:

 

To avoid overlapping lessons for teachers, we can set such condition:

 

Teachers’ timetables will look:

In this case teacher some days has lessons only in primary school, some days – only in secondary.

 

If we set:

Then teacher can have lessons in both schools on the same day: