Who has the right to watch the monitoring of the entrance examination room?

During the postgraduate entrance examination, the invigilators are usually the teachers in our school, but there are still some adjustments in other schools. Generally speaking, there are not many teachers in our school. There are two invigilators in the examination room, one in front and the other in the back. There will also be invigilators who specialize in monitoring, and invigilators will implement a temporary lottery system.