In the cities and municipalities, it shall be composed of the members of the existing municipal or city councils, including the vice-mayors (who shall become members of the Sangguniang Bayan upon the promulgation of this Decree and until December 31, 1975) and as many barangay captains and representatives from other sectors of the community as there are members of the existing city or municipal board or council to be appointed by the President or his duly authorized representative, upon the recommendation of the local unit concerned, through the Secretary of Local Government and Community Development and the President of the Katipunan ng Mga Kabataang Barangay in the city or municipality.