1. There is a mirror in front of you
2. There is no "backer" at your back
3. Facing the bathroom or directly facing the door
4 , The seat cannot have insufficient lighting or no windows
5. The seat cannot face the kitchen, gas stove, or refrigerator
6. The seat cannot face the water dispenser
7. The seat cannot be behind the photocopier or computer
8. There cannot be a sink or faucet next to the seat
9. The seat cannot face the door of the supervisor or boss's room
10. The seats cannot be used by large electrical appliances or appliances