If the obligor has more than one assignment for support, add together the amounts of support due for all the assignments. How to fill out the Guide to Assigning Contracts in California?Once you go into a purchase and sale agreement with your seller you need an assignment agreement to assign that to your end buyer. Under California law, assignment of claims is not a panacea. Not all claims can be assigned. Assignment Agreement is executed and ratified. The person assigning the judgment (the seller) to you (the buyer) must sign the form in the presence of a notary. 2. Your spouse fills out a court form. Your spouse can fill out the Stay of Service of Earnings Assignment Order (form FL-455).