(a) The bylaws of a savings bank must contain sufficient provisions to govern the institution in accordance with the Texas Savings Bank Act, the Texas Business Organizations Code, and other applicable laws, rules and regulations, or the certificate of formation. Bylaws may contain a provision which permits such bylaws to be adopted, amended, or repealed by either a majority of the shareholders or a majority of the board. Bylaw amendments may not take effect before being filed with and approved by the Commissioner in accordance with §75.123 of this title (relating to Certificate of Formation or Bylaws Amendments).(b) A savings bank is specifically authorized to adopt in its bylaws a provision which limits the liability of directors as contained in the Texas Business Organizations Code to the same extent permitted under state law for banks and savings and loan associations. Such bylaw provision is optional and within the discretion of the savings bank.(c) Other optional bylaws may be adopted by a state savings bank with the approval of the Commissioner obtained in accordance with §75.123 of this title (relating to Certificate of Formation or Bylaws Amendments).