82 national government as annual assistance for six (6) years after the approval of this Organic Act, and shall be included in the annual General Appropriations Act (GAA). The annual assistance herein mentioned shall be appropriated and disbursed through a Public Works Act duly enacted by the Regional Assembly. The national programs and projects in the autonomous region shall continue to be financed by central government or national government funds. SEC. 12. Sectoral Representatives. – The sectoral representatives mentioned in Section 3, Article VI of this Organic Act, shall be chosen by the sectoral groups concerned at sectoral conventions called for the purpose by the Commission on Elections. The sectoral conventions shall be held within three (3) months after the date of the holding of the simultaneous plebiscites mandated by this Organic Act. The Commission on Elections (COMELEC) shall formulate the rules and regulations to ensure equitable sectoral representations in the Regional Assembly. It shall identify and accredit the sectoral organizations, which shall be entitled to sectoral representation in the Regional Assembly. The Regional Assembly shall enact a law for the election of marginalized and under-represented sectors, following the principle of proportional representation, within its first term following the approval of this Organic Act. SEC. 13. Plebiscite and Effectivity of this Organic Act. – This Organic Act shall take effect when approved by a majority of the votes cast in the four (4) provinces constituting the present Autonomous Region in Muslim Mindanao pursuant to Republic Act No. 6734, the Organic Act for the Autonomous Region in Muslim Mindanao. A separate plebiscite shall be held simultaneously with the plebiscite mentioned in the preceding paragraph in the Provinces of Basilan, Cotabato, Davao del Sur, Lanao del Norte, Palawan, Sarangani, South Cotabato, Sultan Kudarat, Zamboanga del Norte, Zamboanga del Sur and the newly created Province of Zamboanga Sibugay, and the cities of Cotabato, Dapitan, Dipolog,