max building changes per week for all students

[AZ]

I set the 'max building changes per week for all students' to 1 and I got 3, 4 or even 5 building changes; so I tried to set the 'max building changes per week for all students' to 0, but my timetable still contains biulding changes; How to solve the problem?

[Liviu Lalescu]

I saw the timetable; many activities do not have a specified room - I think you forgot these constraints. The buildings constraints are respected, but they are very easy as it is now.

[AZ]

Hi, and thanks for your answer;
I just didn't set all activities to specified rooms, because I don't need it;
history, math, physics ... don't need a specified room, so I can choose it in a second time;

I just want few activities in some specified rooms (laboratories), but I need that all classes swap buildings (3 days in building one and three in buildings 2);
this is because all laboratories are in building 1

thanks
Antonio

[Liviu Lalescu]

For example, in your file, students 1A, you have only Fisica and Chimica in a specified room. So how should FET know about the other buildings for students 1A? You need to constrain their activities in other rooms (and each room of these has a building), then you will get what you want.

[AZ]

thanks a lot for your quick answers! 
I'll try this way.
thanks again,
Antonio

[AZ]

sorry, but I still have problems with building changes;
classes 2D, 2E, 2F change building even two times in a morning and I don't understand why
can you help me?
Antonio

[Liviu Lalescu]

Maybe you get the wrong impression because the rooms G-S12..G-S16 have unspecified building?

[AZ]

you have hawk's eye!

thanks