We have 3 lessons per week and they shall be in the same classroom

Problem:
Lets say that class 5A has biology lesson three times per week. Biology lesson can be in BioLab1 or BioLab2 or BioLab3, the generator can choose one, but it has to be the same room for all 3 biology lessons.

Solution:
1. Input the biology lesson so that it can be in any of the 3 labs:

2. Add advanced cardrelationship that says that Bio lesson in any class can occupy max 1 classroom per week: