§ 235. Officers, expenses and assistance. The commission shall elect annually, a chairman from its own members. It shall have the power and authority to employ experts, clerks, and a secretary, and to pay for their services and such other expenses as may be necessary and proper, not exceeding, in all, the annual appropriation that may be made by said city or village for said commission. The body creating the commission shall by ordinance or resolution provide what compensation if any, each of such commissioners shall receive for his services as such commissioner. Each city and incorporated village is hereby authorized and empowered to make such appropriation as it may see fit for such expenses and compensation, such appropriations to be made by those officers or bodies in such city or village having charge of the appropriation of the public funds.