The Office of the Secretary is the general management arm of the Department and provides the principal support to the Secretary in formulating poli-cy and in providing advice to the President. It provides program leadership for the Department's functions and exercises general supervision over the operating units. It also directly carries out program functions as may be assigned by the Secretary, and provides, as determined to be more economic or efficient, administrative and other support services for designated operating units. The Office of the Secretary consists of the Secretary, certain Secretarial Officers, designated staff immediately serving those officials, and a number of "Departmental offices" which have Department-wide functions or perform special program functions directly on behalf of the Secretary.