Official : In terms of event management, a person involved in delivering an event, who could be a director, manager, umpire, referee, judge, steward or team manager
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}