Tenn. Code Ann. § 48-60-101: Authority to amend

(a) A corporation may amend its charter at any time to add or change a provision that is required or permitted in the charter or to delete a provision not required in the charter. Whether a provision is required or permitted in the charter is determined as of the effective date of the amendment.

(b) Except as provided in § 48-56-202(b) , a member of the corporation does not have a vested property right resulting from any provision in the charter or bylaws.