Tennessee Code Title 17. Judges and Chancellors § 17-2-122

(a) Notwithstanding § 16-15-209 or § 17-2-109 or any other relevant provision to the contrary, a judge shall have the authority to appoint a special judge as provided in this section.

(b) Sections 16-15-209 and 17-2-109 and any other relevant provision shall not apply where a judge finds it necessary to be absent from holding court and appoints as a substitute judge an officer of the judicial system under the judge's supervision whose duty it is to perform judicial functions, such as a juvenile magistrate, a child support magistrate or clerk and master, who is a licensed attorney in good standing with the Tennessee supreme court. The judicial officer shall only serve as special judge in matters related to their duties as judicial officer.