Okla. Stat. tit. 18, § 2013

A. Except as otherwise provided in the articles of organization, operating agreement, or this act, a limited liability company shall be managed by or under the authority of one or more managers who may but need not be members. B. The articles of organization or operating agreement may prescribe qualifications for managers. C. The number of managers shall be specified in or fixed in accordance with the articles of organization or operating agreement. D. The articles of organization or operating agreement of a limited liability company may authorize the manager or managers of the limited liability company to adopt, amend, and repeal bylaws, or regulations, not inconsistent with the articles of organization and the operating agreement, to govern the affairs of the limited liability company. Unless otherwise provided in the articles of organization, operating agreement or enabling resolutions, bylaws, or regulations from the managers shall be considered a part of the operating agreement.