The municipality shall have home rule and under this Charter shall exercise all powers of local self government granted by the Constitution of Ohio and all other powers granted to municipalities by the laws of Ohio in effect at any given time. No reference in this Charter to any particular power shall be deemed to be exclusive. If the manner of exercising any power be not prescribed in this Charter it shall be exercised in the manner prescribed by ordinance, or in the manner prescribed by general law in any case wherein the general law may not be modified by or pursuant to Charter or ordinance, or wherein the manner of exercise has not been prescribed by ordinance.