Issue link: http://itf.uberflip.com/i/536583
6 M. REFEREE In each Grand Slam Tournament the Referee in consultation with the Grand Slam Chief of Supervisors, shall: 1. Act as final on-site authority for the interpretation of these Grand Slam Rules, Grand Slam Tournament Regulations, Grand Slam Code of Conduct, Duties and Procedures for Officials and Rules of Tennis as to all matters arising that require immediate resolution at the tournament site. 2. Prior to the tournament conduct such training sessions and meetings as may be necessary to familiarise thoroughly all officials with all applicable Rules and Procedures. 3. Appoint a Chief Umpire and Electronic Review Officials and ensure that their duties and responsibilities are performed properly. 4. Approve the assignment of all Chair Umpires and Line Umpires for matches. 5. Liaise with the Chair Umpires and Line Umpires and decide on the competence of these officials. 6. Remove a Chair Umpire and/or remove, rotate or replace any Line Umpire or Net Umpire whenever he decides it is necessary to improve the officiating of a match. 7. Ensure that the tournament is conducted fairly in accordance with these Grand Slam Rules, Grand Slam Tournament Regulations, Grand Slam Code of Conduct, Duties and Procedures for Officials and the Rules of Tennis. 8. Ensure that each court, net, net posts and singles sticks conform to the specifications in the Rules of Tennis and that each court is equipped as follows: a. Chair Umpire's Chair The Chair Umpire's chair is recommended to be a minimum of six (6) feet (1.82 metres) and a maximum of eight (8) feet (2.44 metres) in height. The Chair Umpire's chair shall be centred along an extension of the net approximately three (3) feet (0.9 metres) from the net post. If a microphone is to be used it must have an "on-off" switch. It must be easily adjustable and not hand held. There should be a sunscreen available. b. Line Umpires' Chairs Chairs for Service and Base Line Umpires should be located on an extension of their respective lines along the side fence. They shall not