20.— (1) The chief executive shall carry on and manage, and control generally, the administration of the Authority and perform such other functions (if any) as may be determined by the Authority.

(2) The chief executive shall perform his or her functions subject to such policies as may be determined from time to time by the Authority, and shall be accountable to the Authority for the efficient and effective management of the Authority and for the due performance of his or her functions.

(3) The chief executive may make proposals to the Authority on any matter relating to its functions.

(4) The Authority may designate a member of the staff of the Authority to perform the functions of chief executive in the absence of the chief executive or where the position of chief executive is vacant, and a member so designated shall in such absence or upon such position being vacant perform those functions.