(a) If authorized by the certificate of incorporation, the shareholders may adopt or amend a bylaw that fixes a greater quorum or voting requirement for shareholders or voting groups of shareholders than is required by sections 33-600 to 33-998 , inclusive. The adoption or amendment of a bylaw that adds, changes or deletes a greater quorum requirement for shareholders must meet the same quorum requirement and be adopted by the same vote and voting groups required to take action under the quorum and voting requirement then in effect or proposed to be adopted, whichever is greater.
(b) A bylaw that fixes a greater quorum or voting requirement for shareholders under subsection (a) of this section may not be adopted, amended or repealed by the board of directors.