Sure - 10_1A, 10_1B, 10_1C, 10_2, 11_2A and 12_2.
But I think I now know the answer - I also had a constraint to set activities with a tag to a certain number of rooms. This seems to override the Students with a preferred room...
But I think I now know the answer - I also had a constraint to set activities with a tag to a certain number of rooms. This seems to override the Students with a preferred room...