Section 3. The executive office for administration and finance shall serve as the principal agency of the executive department of the government of the commonwealth for the following purposes:
(1) Developing, co-ordinating, administering and controlling the financial policies and programs of the commonwealth;
(2) Supervising the organization and conduct of the business affairs of the departments, commissions, offices, boards, divisions, institutions and other agencies within the executive department of the government of the commonwealth;
(3) Developing new policies and programs which will improve the organization, structure, functions, economy, efficiency, procedures, services and administrative practices of all such departments, commissions, offices, boards, divisions, institutions and other agencies.