Ordinances, resolutions, and other matters or subjects requiring action by the council shall be introduced and sponsored by a member of the council, except that the city attorney, the manager or the clerk may present ordinances, resolutions and other matters or subjects to the council, and any councilmember may assume sponsorship thereof by moving that such ordinance, resolution, matter or subject be adopted; otherwise, they shall not be considered. [Code 2004 § 2-92.]