The number of members of a regional planning commission, their method of appointment, and the proportion of the costs of regional planning to be borne respectively by the various municipal corporations, townships, and counties in the region and by other participating units of local government shall be determined by a majority of the planning commissions and boards. Costs may include, but are not limited to, compensation and actual and necessary expenses for appointive members of a regional planning commission who are not also holding another public office to which they were elected. Any member of a regional planning commission may hold any other public office and may serve as a member of a city, village, or county planning commission, except as otherwise provided in the charter of any city or village.
Boards of township trustees, boards of county commissioners, and legislative authorities of municipal corporations, and the governing bodies of other participating units of local government, may appropriate their respective shares of the costs of regional planning. Those sums shall be paid into the treasury of the county in which the greater portion of the population of the region is located, and shall be paid out on the certificate of the regional planning commission and the warrant of the county auditor of that county for the purposes authorized by sections 713.21 to 713.27 of the Revised Code.
R.C. § 713.21