Forms ; How To Commence A Civil Action. Partition Addendum (840P) A fill-in-the-blanks RJI Partition Addendum.Uncontested Matrimonial RJI (UD-13) A fill-in-the-blanks Uncontested Matrimonial RJI. The document is a partition agreement between two parties to terminate their community ownership of a parcel of land and divide it between them. These computer programs ask you questions. The program then uses your answers to make a form for your case or to make an information sheet to help you in court. When two or more owners cannot agree on the disposition of the property in question, any of the owners can file a partition action in the appropriate court.