Tennessee Code Title 40. Criminal Procedure § 40-3-103

(c)(1) It is the mandatory duty of the court, before consenting to a prosecution by information, to advise the accused in the presence of the accused's attorney of the accused's constitutional right to be tried only upon presentment or indictment of the grand jury of the accused's peers.

(2) Upon the accused's agreeing in writing in the presence of the accused's attorney to waive such right, the court may proceed in all respects as in cases prosecuted by indictment or presentment.

(3) The written waiver required in subdivision (c)(2) shall be attached to and become a part of the information.