Rule 22 is a procedural rule under the Federal Rules of Civil Procedure that governs interpleader actions, allowing a party holding property to initiate a lawsuit to compel competing claimants to resolve their claims. This rule is essential because it helps to prevent multiple liabilities and conflicting judgments that can arise when two or more parties claim the same property. By providing a mechanism for the stakeholder to bring all relevant parties before the court, Rule 22 promotes judicial efficiency and fairness in dispute resolution.