“Approval by (or approval of) the members” means approved or ratified by the affirmative vote of a majority of the votes represented and voting at a duly held meeting at which a quorum is present (which affirmative votes also constitute a majority of the required quorum) or written ballot in conformity with Section 5513, 7513, or 9413 or by the affirmative vote or written ballot of such greater proportion, including all of the votes of the memberships of any class, unit, or grouping of members as may be provided in the bylaws (subdivision (e) of Section 5151, subdivision (e) of Section 7151, or subdivision (e) of Section 9151) or in Part 2, Part 3, Part 4 or Part 5 for all or any specified member action.