Paragraph 5
Any two or more local planning authorities may, with the approval of the Minister, concur in establishing a joint advisory committee for the purpose of advising those authorities as to the preparation of development 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 is established:
Provided that a majority of the members of any such committee shall be members of one or other of those authorities.