(2) If the articles of incorporation or this chapter provide 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 ORS 60.241. 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. [1987 c.52 §62; 1991 c.883 §5]