This Contract starts on. , 20 and ends one year from this date. 9.A one time showing agreement can give an agent permission to enter the sale, it does not conform to contracts we accept for entry. MTO, our international business unit, provides training and expertise small and midsized companies need to export goods and services worldwide. A Commission Agreement for Sale is used for one-time showings of real estate so a Realtor can show a home to a prospective buyer and be paid a commission. Postings include all outgoing grants and open-ended PT services.