The term 'GROUP THAT HELPS A SHERIFF' can be summarized as a POSSE, which is a group of people who are organized to assist a sheriff in law enforcement. POSSE members are usually volunteers who are deputized by the sheriff and are used to help with tasks such as searching for fugitives, apprehending suspects, and providing security at public events. The term 'POSSE' is derived from the Latin word 'POSSE comitatus, ' which means 'power of the county.'