1. Voting by single voting group. If a corporation's articles of incorporation or this Act provides for voting by a single voting group on a matter, action on that matter is taken when voted upon by that voting group as provided in section 727.
2. Voting by multiple voting groups. If a corporation's articles of incorporation or this Act provides for voting by 2 or more voting groups on a matter, action on that matter is taken only when voted upon by each of those voting groups counted separately as provided in section 727. Action may be taken by one voting group on a matter even though no action is taken by another voting group entitled to vote on the matter.