(a) The certificate of incorporation or bylaws may provide for a higher or lower quorum or voting requirement for members (or voting groups of members) than is provided for by this chapter.
(b) An amendment to the certificate of incorporation or bylaws that adds, changes, or deletes a quorum or voting requirement 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 requirements then in effect or proposed to be adopted, whichever is greater.