A one time showing agreement can give an agent permission to enter the sale, it does not conform to contracts we accept for entry. The Clear Cooperation Policy is a NAR-mandated policy that governs the public marketing of listings and their entry into the multiple listing service.A collection of all the forms and and documents that are posted on the San Diego Housing Commission's (SDHC) website, listed in one location. A OneTime Showing Agreement form is a legally binding agreement between the buyer's broker and the homeowner listing the property for sale. Had at least one on-time payment in the last two years. Download and complete the Automatic Payment Form. Does this mean that brokerages can only have one agreement with the buyer? In these cases, one side argues that the other side broke their agreement and it hurt them in some way.