Activities that are over-allocated
You might decide that a particular level of over-allocation is acceptable. If you have a choice between allocating 152 students to an activity with a planned size of 150 (perhaps accommodated in a lecture theatre of that capacity), or repeating the lecture to two groups of 76, you might opt to retain the over-allocated activity on the assumption that 100% attendance is unlikely.
The bar and the number beside Overallocated by >= [0-100]% in the Activities section of the dashboard indicates how many activities are over-allocated. In the percentage box, enter a number.
To resolve the problem, you can