Each City department shall be headed by a full-time or part-time director. With the exception of the Departments of Finance and Law, the Manager shall appoint all department heads. The heads of the Departments of Finance and Law shall be appointed by the Council, in accordance with the provisions of this Charter. Each department head shall be an administrative officer of the City. Two or more departments may be headed by the same person and the City Manager may serve as the director of one or more departments in addition to his duties as Manager, when approved by Council.