10.—(1) The functions exercisable by the existing board immediately before the appointed day under any enactment shall, on and after the appointed day, transfer to and be exercisable by the Authority.
(2) So far as may be necessary for the purpose or in consequence of the exercise of functions by the Authority by virtue of article (1) above, any enactment and any other instrument or document shall be read as if reference to a joint board (however described) were or included references to the Authority.