Ohio Rev. Code Ann. § 713.05

The planning commission may control, appoint, or employ such architects, engineers, and other professional service, and may appoint such clerks, draughtsmen, and other subordinates as are necessary for the performance of its functions. The expenditures for such service and employments shall be within the amounts appropriated for such persons by the legislative authority of the municipal corporation, and such legislative authority shall provide for the expenses and accommodations necessary for the work of the commission.