A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers. Under NorthstarMLS rules, a one time showing contract does not meet our requirements for a listing entry.This Purchase and Sale Agreement ("Agreement") is made and entered into between DMark. Line 4 List complete name and address to which tax bills are to be sent. Failure to complete the State prescribed DTE 1 FORM may result in a Dismissal. Download the Complaint DTE Form 1 and Instructions to your computer. Read instructions on back before completing form. Attach additional pages if necessary. File online- Save paper, save time, start your business online. Failure of a selected applicant to satisfactorily negotiate a contract within a reasonable time may result in the applicant forfeiting its award.