This summary is not the rule. The rule text controls.
If a court has appointed a receiver in a case, the case cannot just be dropped or dismissed on its own. A judge has to approve any dismissal. This protects the receiver's work and makes sure someone with authority signs off before the case ends.
A receiver is a person appointed by the court to manage property, money, or a business that's tied up in a lawsuit, often because there's a dispute over who controls it or because it needs to be protected while the case is ongoing. When a receiver is handling this kind of property, the process follows existing Tennessee laws and the way courts have traditionally handled these situations, not just the general civil procedure rules.
For everything else, like how to ask a court to appoint a receiver, or how a lawsuit involving a receiver moves forward, the regular rules of civil procedure apply. So if you're part of a case where a receiver is involved, expect the receiver's specific duties to follow long standing legal practice, while the rest of the lawsuit works like any normal civil case.