A. If the articles of incorporation or this chapter 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 § 13.1-666.
B. If the articles of incorporation or this chapter provides for voting by two 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 § 13.1-666. Action may be taken by different voting groups on a matter at different times.