Tennessee Code Title 6. Cities and Towns § 6-22-127

(a) Subject to § 6-22-126, warrants shall be issued by the finance director.

(b) Each warrant shall specify the particular departmental fund against which it is drawn and shall be payable out of no other fund.

(c) Any officer or employee in the finance director's office may be designated by such finance director to draw warrants with the same effect as if signed by the finance director, such designation to be in writing, in duplicate, filed with the city manager. The city manager may make such designation if the finance director is absent or disabled and there is no one in the finance director's office designated to act. Any such designation may be revoked by the finance director while acting as such by filing the revocation in duplicate with the city manager and the treasury division.