A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers. Understand how to properly fill out an exclusive buyer broker agreement.– Understand how to properly fill out a showing agreement. This form may be used to create a buyer's commission agreement based on a one-time showing of property. The forms and disclosures required when buying and selling residential properties in Miami-Dade County. Building and Zoning Code Violations. Miami-Dade County Special Taxing District Addendum (MDSTA-1). Keep in mind neither of these forms create an exclusive relationship in the same manner as the Exclusive Buyer Broker Agreement(s). (In the Lease, the owner, whether one or more, of the property is called "Landlord. 1. Search for Flat Fee MLS Companies.