chaperone
n. countable B2 Upper Intermediate US //ˈʃæpɝˌoʊn// UK //ʃˈæpəɹˌəʊn// chap·er·one
n. an adult who is responsible for looking after a group of children or teenagers, especially at a party or on a trip. They make sure everyone behaves and stays safe.
n. an adult who supervises a group of young people, particularly in a social or travel context. Often used in the context of school events or professional networking functions.
The teacher acts as a chaperone at the school dance.
The company hired a professional chaperone to ensure that the interns stayed within the designated networking area during the conference.
While the primary role of a chaperone is to maintain order, their presence also provides a sense of security that allows the younger participants to engage more freely with the event's activities.
See chaperon.