Wis. Stat. § 180.0726: Action by single and multiple voting groups.

(1) 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 the voting group as provided in s. 180.0725.

(2) If the articles of incorporation or this chapter 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 s. 180.0725. 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.

(3) A voting group described in s. 180.0103 (19) (b) constitutes a single voting group for purposes of voting on the matter on which the shares are entitled to vote.