(17) Perform such other powers and functions as may be provided by law. SEC. 4. ORT Organizational Structure. – The Office of the Regional Treasury is composed of the Office of the Regional Treasurer, the Office of the Assistant Regional Treasurer for Administration, the Office of the Assistant Regional Treasurer for Operations, the Divisions and the ORT Field Units. SEC. 5. Functions of Offices, Divisions and Field Units. - The Offices, Divisions and Field Units shall have the following functions: (1) A Regional Treasurer who shall act and exercise the powers and duties of a Chief Executive Officer; (2) An Assistant Regional Treasurer for Administration Service who shall assist the Regional Treasurer in the day-to-day management of the office, more specifically those relating to personnel, legal, information, supplies, records, equipment, security, and custodial work, and such other duties as may be assigned by the Regional Treasurer; (3) An Assistant Regional Treasurer for Operation Service who shall assist the Regional Treasurer for Operation Service who shall assist the Regional Treasurer for operation which include, among others, formulation, institutionalization and administration of regional fiscal policies, fiscal research and planning, revenue strategy development and implementation, revenue generation and management, debt management, financial and economic intelligence, and such other functions as may be assigned to him/her by the Regional Treasurer; In case of absence or temporary disability of the Regional Treasurer, the Assistant Regional Treasurer for Administration, or in his/her absence the Assistant Regional Treasurer for Operation, shall discharge the duties and functions of the Regional Treasurer, except the power to appoint and discipline personnel; and (4) Field Units. - For purpose of effectively implementing regional revenue measures and strategies, the Regional Treasurer shall establish operations field unit in each of the provinces and cities of the Autonomous Region in Muslim Mindanao. Composition of such units shall be determined by the Regional Treasurer in accordance with the extent of operations requirements in each province or city and applicable rules and regulations. SEC. 6. Qualifications – No person shall be appointed to the position of Regional Treasurer unless he/she is: (1) natural born citizen of the Philippines; (2) a resident and registered voter of the Autonomous Region in Muslim Mindanao; (3) at least thirty years (30) of age; 196