spot-keeper
nounUK /ˈspɒtˌkiːpə/
US /ˈspɑːtˌkiːpər/
A spot-keeper is a person who watches a place and makes sure everything is okay.
The spot-keeper stood at the gate and checked everyone who came in.
OTHER MEANINGS
2. A person who keeps a record of the spots or marks in a game or contest.
The spot-keeper marked each point on the score sheet.
3. A person who looks after a particular place or spot, such as a parking area.
The spot-keeper made sure every car was parked in the right space.
4. In some sports, a person who notes where the ball lands.
The spot-keeper called out where the ball had touched the ground.