(11) Institutionalize the participation of farmers, farmworkers, other beneficiaries, and agrarian reform advocates in agrarian reform policy formulation, program implementation and evaluation; (12) Exercise exclusive authority to approve or disapprove conversion of agricultural lands for residential, commercial, industrial, and other land uses as maybe provided for by law; (13) Call upon any government agency and non-government organizations to extend full support and cooperation to program implementation; and (14) Exercise such other powers and functions as may be provided for by law or directed by the Regional Governor, to promote efficiency and effectiveness in the delivery of public services. SEC. 4. Organizational Structure. - The Department shall consist of the Department Proper, the Department Services and their Divisions and the Provincial and the Municipal Agrarian Reform Offices. Chapter 2 Department Proper SEC. 5. Office of the Regional Secretary. - The Department shall be headed by a Regional Secretary who shall be appointed by the Regional Governor subject to confirmation by the Commission on Appointments of the Regional Assembly. The Regional Secretary shall act as the Chief Executive of the Department, who shall exercise all powers and authority inherent to his/her office and responsibility. SEC. 6. Office of the Assistant Regional Secretary. - The Regional Secretary shall be assisted by a Career Assistant Regional Secretary. SEC. 7. Agrarian Reform Adjudication Board. - The Agrarian Reform Adjudication Board shall be administratively under the office of the Regional Secretary. The Board shall be composed of the Regional Secretary as Chairperson, the Assistant Regional Secretary, Chief of the Agrarian Legal Assistance Division (ALAD) and two (2) other members to be appointed by the Regional Governor upon the recommendation of the Regional Secretary. The Board shall assume the powers and functions with respect to the adjudication of agrarian reform cases except those powers and functions within the exclusive jurisdiction of DAR Regional Secretary. These powers and functions may be delegated to the provincial offices of the DAR through their provincial adjudicators. SEC. 8. Regional Agrarian Reform Council (RARC). – The RARC shall be the highest policy making body regarding agrarian reform in the area of autonomy. It is mandated to formulate policies, rules & regulations for implementation, taking into consideration the geographical area, common and distinct historical, cultural heritage, social-economic structure 49