Okla. Stat. tit. 11 § 30-104
The board of control shall adopt rules and regulations for its own guidance and for the governance and operation of the municipal hospital, not inconsistent with this article, which shall be subject to the approval of the municipal governing body. It shall have exclusive control of expenditures of all moneys collected and deposited to the credit of the municipal hospital fund, of the hospital building or buildings, and of the care and custody of the grounds, rooms, or buildings purchased, leased or set apart for the hospital. All money received by the board on account of the operation of the hospital, or otherwise, shall be paid by the board to the municipal treasurer, who shall deposit the same in a special account in the municipal treasury to be designated the "hospital fund." Such moneys shall be paid out only upon warrants authorized by the board, drawn and signed by its secretary, and countersigned by its president. The board shall have authority to establish a petty cash fund, not to exceed the sum of Five Hundred Dollars ($500.00) at any one time, for use in maintaining the hospital, which money shall be expended by the superintendent of the hospital on forms prescribed and authorized by the board of control. The board of control shall have authority to appoint, and remove, a suitable superintendent, or matron, or both, and necessary assistants and nurses, and to fix their compensation, all of which shall be subject to the approval of the municipal governing body.
Okla. Stat. tit. 11, § 30-104