Iowa Code § 490.726: Action by single or multiple voting groups.

1. If the articles of incorporation or this chapter 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 490.725.

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 section 490.725. Action may be taken by different voting groups on a matter at different times.