Mo. Rev. Stat. § 176.525: Associations may make bylaws.

Any association organized under the provisions of sections 176.500 to 176.540 may make, establish and put into execution such bylaws and resolutions, not inconsistent with any other provision of sections 176.500 to 176.540, as may seem necessary or convenient for its regulation and government, and for the arrangement of its affairs, and do and execute all such acts and things as may be necessary to carry into full effect the purposes intended by the provisions of sections 176.500 to 176.540.