The City of Bryan, Ohio, shall have all powers now or hereafter granted to municipalities by the Constitution and laws of the State of Ohio, and all such powers shall be exercised in the manner prescribed by this Charter, and if not prescribed herein, then in such manner as now or hereafter may be prescribed by ordinance or resolution, and if not prescribed by ordinance or resolution, then in such manner as prescribed by the general laws of Ohio until the manner of the exercise of such powers shall be prescribed by ordinance or resolution.