Administrative Code of 1987
Section 28. Functions of the Common Staff Support System. - The various staff units in the Office of the President Proper shall form a common staff support system and shall be organized along the various tasks of the Office namely:
(1) The Cabinet Secretariat which shall assist the President in the establishment of agenda topics for the Cabinet deliberation, or facilitate the discussion of cabinet meetings. It shall have such organization, powers and functions as are prescribed by law;
(2) The Presidential Management Staff (PMS) which shall be the primary governmental agency directly responsible to the Office of the President for providing staff assistance in the Presidential exercise of overall management of the development process. It shall have such organization, powers and functions as are prescribed by law;
(3) General Government Administration Staff which shall provide the President with staff support on matters concerning general government administration relative to the operations of the national government including the provision of legal services, administrative services, staff work on political and legislative matters, information and assistance to the general public, measures toward resolution of complaints against public officials and employees brought to the attention of the Office of the President and such other matters as the President may assign;
(4) Internal Administrative Staff which shall render auxiliary and support services for the internal administration of the Office of the President.
D - PRESIDENTIAL ASSISTANT/ADVISERS SYSTEM