If the capacity of the room is specified, EDT will alert you if the population for the room exceeds its capacity.
If you use room groups (Room group), the capacity of a room in a group must be at least equal to that of the group.
Note: if several rooms have the same capacity, select them, right-click and launch Modify > Capacity.
From the course form or in the room’s selection window, when the room is too small to hold all the students of the courses, it is displayed with the icon in the course form and in the selection window.