Buyer and Seller agree to cooperate fully with the lender and supply the necessary documentation to complete the assumption. It allows one party to "assume" the rights and responsibilities of the other party.1. Read the agreement carefully to understand the obligations. Enter the name, address, and SSN of each beneficiary of the estate. Include an extra sheet, if necessary. The basic concept is that the defendant is not responsible if the plaintiff knowingly exposed him or herself to a risk that could knowingly cause harm.