A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers. Flat Fee MLS Listing Salt Lake City Utah.By law a buyer broker agreement needs to be signed once you make an offer to have in our files. Salt Lake Citybased real estate agents give their perspective on the nationwide changes to the real estate industry. Here are the two huge changes: 1) Compensation offers moved off the MLS. 2) Written agreements for MLS participants acting for buyers. It is a written agreement in which the seller agrees to pay a commission to the Realtor connected to the buyer. The real estate broker will detail their responsibilities in this agreement section while helping homebuyers. Turn in a Realtor® Application to the Salt Lake Board of Realtors® (SLBR) online or in person. Individuals who wish to obtain a real estate license in the state of Utah must: 1.