Fitness test I attended took a lot longer than intended. As they can only have a certain number running the track at once so people do not complain about failing because they were in the outside lane.
The 9am group got split into 2. Then when the first lot of the 9am group finished around 10am, the actual 10am group had arrived, but the second half of the 9am group needed to start.
They then had to inform the 10am group they needed to half them also, and they can't start till the 2nd half of the 9am group had finished.