5Any two or more local planning authorities may, with the approval of the Secretary of State, concur in establishing a joint advisory committee for the purpose of advising those authorities as to the preparation of structure plans and local plans and generally as to the planning of development in their areas ; and any such committee shall be constituted in such manner as may be determined by the authorities by whom it was established :
Provided that a majority of the members of any such committee shall be members of one or other of those authorities.
6If it appears to the Secretary of State to be expedient that a joint advisory committee of any two or more local planning authorities should be established in accordance with paragraph 5 of this Schedule, he may, after consultation with those authorities, by order establish such a committee, and any such order may—
(a)provide for the reference to the committee of such matters as may be specified in the order ;
(b)make such incidental and consequential provisions (including provision for the payment of expenses of the committee and the transfer and compensation of officers) as appear to the Secretary of State to be expedient.
7Any power conferred by this Part of this Schedule to establish committees or to authorise such committees to exercise any functions shall include power to dissolve or alter the constitution of such committees, and to revoke or vary any such authorisation.
8The provisions of this Part of this Schedule shall be in addition to and not in substitution for the provisions of the [1933 c. 51.] Local Government Act 1933 with respect to the appointment by local authorities of joint committees.