Tennessee Code Title 7. Consolidated Governments and Local Governmental Functions and Entities § 7-36-106

(1) The members of the board of directors of the authority shall file with the governing body of the associated municipality an application in writing seeking permission to amend the certificate of incorporation, specifying in such application the amendment proposed to be made;

(2) The governing body shall consider the application and, if it shall, by appropriate resolution, duly find and determine that it is wise, expedient, necessary, or advisable that the proposed amendment be made and shall authorize the amendment to be made and shall approve the form of the proposed amendment, then the persons making application shall execute an instrument embodying the amendment specified in the application, and shall file the application with the secretary of state;

(3) The proposed amendment shall be subscribed and acknowledged by each member of the board of directors before an officer authorized by the laws of this state to take acknowledgments to deeds; and

(4) The secretary of state shall examine the proposed amendment and, if the secretary of state finds that the requirements of this section have been complied with and the proposed amendment is within the scope of what might be included in an original certificate of incorporation pursuant to § 7-36-104, then the secretary of state shall approve the amendment and record it in an appropriate book in the secretary of state's office.