Subject to the provisions of this Charter and after consultation with the Administrative Steering Committee, the Council shall adopt, by ordinance, an Administrative Code, which shall provide in detail the organization of the City government, define the powers and duties of each organizational unit, and determine the administrative procedures to be followed. Where the Charter, Administrative Code, or ordinances of the City are silent, the officers and employees of the City shall have and may exercise all powers, duties and functions provided for similar officers and employees by State law; however, provisions of the Charter, Administrative Code and ordinances of the City shall supersede those of the State law in case of conflict.