CORP § 12223

“Approval by (or approval of) a majority of all members” means approval by an affirmative vote (or written ballot in conformity with Section 12463) of a majority of the votes entitled to be cast. Such approval shall include the affirmative vote of a majority of the outstanding memberships of each class, unit, or grouping of members entitled, by any provision of the articles or bylaws of this part to vote as a class, unit, or grouping of members on the subject matter being voted upon and shall also include the affirmative vote of such greater proportion, including all of the votes of the memberships of any class, unit, or grouping of members if such greater proportion is required by the bylaws or by this part.