Tenn. Code Ann. § 48-17-207: Action by single and multiple voting groups

(a) If the charter or chapters 11-27 of this title provide 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 § 48-17-206 .

(b) If the charter or chapters 11-27 of this title provide for voting by two (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 § 48-17-206 . Action may be taken by one (1) voting group on a matter even though no action is taken by another voting group entitled to vote on the matter.