You're not going to let just anyone into the VIP room.
After hooking a Survivor for the first time, No Way Out gains a token. Once the exit gates have been powered, No Way Out activates.
When a Survivor interacts with an exit gate switch, you receive a loud noise notification. The Entity then blocks both exit gate switches for 12 seconds, plus an additional 6/9/12 seconds for each token in your possession.