California Code, Family Code - FAM § 2065

If the employee benefit plan has been served and no notice of appearance, notice of motion to quash service of summons pursuant to Section 418.10 of the Code of Civil Procedure, or notice of the filing of a petition for writ of mandate as provided in that section, has been filed with the clerk of the court within the time specified in the summons or such further time as may be allowed, the clerk, upon written application of the party requesting joinder, shall enter the default of the employee benefit plan in accordance with Chapter 2 (commencing with Section 585) of Title 8 of Part 2 of the Code of Civil Procedure.