Action of Council shall be by ordinance, resolution or motion. Motion shall be used to conduct the business of Council, in procedural matters, for elections conducted among and appointments made by Council members, to provide directions to and to make requests of administrative officers and employees and members of Boards and Commissions, and as otherwise provided in this Charter. All other action shall be taken by ordinance or resolution. No action of Council shall be invalidated merely because the form thereof fails to comply with the provisions of this Section. Contracting power shall be governed by Section 8.02.