Okla. Stat. tit. 19 § 1407
A county budget board is created in each county which elects to come under the provisions of this act. The board shall consist of each elected county officer. The chairman of the board of county commissioners shall serve as chairman of the county budget board. The county clerk shall serve as secretary of the county budget board. The chairman shall have all the rights and privileges as any other member of the board, including the right to vote on questions. Each member of the board shall be entitled to cast one vote. The members shall elect a vice-chairman from among them and develop such other rules or procedures as may be necessary to ensure the orderly conduct of business. The vice-chairman shall serve as chairman during the absence or vacancy of the chairman. When a vacancy occurs in the office of any county officer serving as a member of the board, such position on the board shall be considered vacant until the county office is filled in the manner provided by law. Regular meetings of the board shall be set by the board. Special meetings shall be held at the call of the chairman or any two (2) members of the board. A majority of all the members of the board then in office shall constitute a quorum and have the power to transact business. Any official action of the board in adopting or revising the county budget or any portion thereof shall be effective upon the approving vote of a majority of all the board members then in office.
Okla. Stat. tit. 19, § 1407