7.—(1) A member of a joint committee shall hold office for a period of one year from the date of his appointment but he will cease to be a joint committee member if he resigns in accordance with paragraph (3) or is otherwise removed or replaced by the constituent authority which appointed him, or ceases to be a member of a constituent authority (and does not on the same day again become a member of that or any other constituent authority).
(2) A person who ceases to be a member of the joint committee shall be eligible for reappointment.
(3) Any member of the joint committee may resign his membership by sending notice in writing to the proper officer of the constituent authority by whom he was appointed.
(4) Any casual vacancy shall be filled as soon as practicable by the relevant constituent authority, and the person appointed shall hold office for the remainder of the term of office of the person in whose place he is appointed.