Neb. Rev. Stat. § 21-268

(MBCA 7.26) (a) If the articles of incorporation or the Nebraska Model Business Corporation Act provide 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 21-267 . (b) If the articles of incorporation or the act 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 section 21-267 . 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.