Section 2021 Of Chapter 3. Procedural Provisions From California Family Law Code >> Division 6. >> Part 1. >> Chapter 3.

. (a) Subject to subdivision (b), the court may order that a person who claims an interest in the proceeding be joined as a party to the proceeding in accordance with rules adopted by the Judicial Council pursuant to Section 211.
  (b) An employee benefit plan may be joined as a party only in accordance with Chapter 6 (commencing with Section 2060).