6. (1) Subject to the provisions of this Act, a nominated or appointed member of the Board, other than the Chairman, shall hold office for a term of three years from the date on which his name is published under section 5, and may, on the expiration of such term, be eligible for re-nomination or re-appointment. (2) No member appointed or nominated by virtue of his office shall continue to be a member if he ceases to hold that office. (3) Any member of the Board may resign his membership by a letter addressed to the Chairman: Provided that the resignation shall not take effect until it is accepted by the Controlling Authority.