(1) The Board may from time to time, in respect of any particular matter or class of matters, or in respect of any particular area within New Zealand, in writing delegate to—
(a) Any director or member or committee, or any other officer of the Trust; or
(b) The holder for the time being of any specified office or class of office of the Trust; or
(c) Any officer of a Government department or of a local authority—
any of the powers of the Board under this Act except this power of delegation.
(2) Subject to any general or special directions given to him or to it by the Board, the person or committee to whom any powers are so delegated may exercise those powers in the same manner and with the same effect as if they had been conferred on him or it directly by this Act and not by delegation.
(3) Every person or committee purporting to act pursuant to a delegation under this section shall, in the absence of proof to the contrary, be presumed to be acting in accordance with the terms of the delegation.
(4) Every delegation under this section shall be revocable at will, and no such delegation shall prevent the exercise of any power by the Board.