3(1)Anything authorised or required by or under any enactment to be done by the Advisory Committee may be done—
(a)by any member of the Advisory Committee, or of its staff, who has been authorised for the purpose, whether generally or specifically, by the Advisory Committee; or
(b)by any committee or sub-committee of the Advisory Committee which has been so authorised.
(2)Any committee or sub-committee of the Advisory Committee—
(a)may include, as non-voting members, persons who are not members of the Advisory Committee but who are co-opted by the Advisory Committee;
(b)shall be chaired by the Chairman of the Advisory Committee or by another member of the Advisory Committee nominated by him.
(3)The Chairman of the Advisory Committee shall be a member of any committee or sub-committee for which he has nominated another member of the Advisory Committee to be its chairman.