Unless otherwise provided by law or ordinance, the powers and duties of the boards, commissions and committees of the city shall be as from time to time prescribed by the mayor and the city council; and all acts of the boards, commissions or committees of the city shall be subject to the supervision and review of the mayor and city council. Except where otherwise provided by law, nothing contained in this title shall limit the superior authority of the city council to effect any decision it shall enact in respect to the subject matter of this title. Each board, commission or committee of the city may, subject to the approval of the city council, enact rules for the orderly conduct of its business. (2005 Code)