Impleader is defined by the Free Dictionary as, “A procedural device used in a civil action whereby a defendant brings into the lawsuit a third party who is not already a party to the action but may ultimately be liable for the plaintiff’s claim against the defendant.

Impleader is most commonly used where the third party, often an insurance company, has a duty to indemnify, or contribute to the payment of, the plaintiff’s damages.

Here are some briefs:
Option #1: impleader= KB/PLAOED/*ER
Option #2: impleader= KB/PLAOERD