Officiate at sporting events, games or competitions, to maintain standards of play and to ensure that game rules are observed.Judge performances in sporting competitions in order to award points, impose scoring penalties and determine results.

- Manage staff, preparing work schedules and assigning specific duties.- Direct and coordinate organization's financial and budget activities to fund operations, maximize investments, and increase efficiency.- Develop pricing strategies, balancing firm objectives and customer satisfaction.

- Instruct participants in maintaining exertion levels to maximize benefits from exercise routines.- Plan physical education programs to promote development of participants physical attributes and social skills.- Monitor participants progress and adapt programs as needed.

- Assist customers by providing information and resolving their complaints.- Receive payments by cash, check, credit cards, vouchers or automatic debits.- Issue receipts, refunds, credits or change due to customers.