Intervention- Non-Party inserting himself as a plaintiff because he has an interest in the transaction or occurrence / it would be unfair

to leave him out.

PlaintiffJoinder - Plaintiff adding more parties as plaintiffs due to the

necessity of their presence

DefendantImpleader - Defendant pulling in other parties to be defendants because of their liability in the

claim

CLAIM

Interpleader - either party requests that multiple

claims be put together in one cause of action