Definitions:
a person employed to look after the passengers on a ship, aircraft, or train.

a person responsible for supplies of food to a college, club, or other institution.

an official appointed to supervise arrangements or keep order at a large public event, for example a race, match, or demonstration.

a person employed to manage another's property, especially a large house or estate.

(of an official) supervise arrangements or keep order at (a large public event)

manage or look after (another's property)