There shall be established within ABCA an Office of the General Counsel. The head of the office shall be the General Counsel, who shall be an attorney admitted to the practice of law in the District and who shall be appointed by, and serve at the pleasure of, the Mayor. The General Counsel shall advise the Board regarding all legal matters. The Office of the General Counsel shall also be available to provide mediation services or a professional mediator, as a delegate, if the parties to a settlement conference require or request assistance.