Tenn. Code Ann. § 66-11-131: Joinder of petitioners

Where there are several persons entitled to the lien given by this chapter, all or any number of them may join in one (1) suit; or upon the filing by one (1) or more of the lienors of a complaint, petition, or civil warrant for the benefit of all lienors, any other lienor may come in by petition, under oath, without suing out a new attachment, by giving bond and security, with effect as if the attachment, if any, had been taken out by the petitioner.