There shall be a Department of Finance, a Department of Law, a Department of Service, and such other departments as may be established by ordinance, after consultation with the Manager. Each such department shall be headed by a Director, appointed by the Manager who shall be an officer of the municipality. Each Director shall have supervision and control over his department, subject to the direction of the Manager except as otherwise provided in this Charter. Two or more departments may be headed by the same person. The Manager may serve as director of one or more departments in addition to his duties as Manager, if approved by Council.