The council of a municipal corporation may create and discontinue departments and offices other than those provided in sections 705.01 to 705.92, inclusive, of the Revised Code, and may provide for the appointment of all officers of such departments, but the functions and number of subdepartments, and the number and salaries of subordinates and employees shall be fixed by the executive heads of the various departments, all of which provisions shall be subject to the rules and regulations of the civil service commission.