Money orders are a safe alternative to cash or checks. Find out how much they cost, when you need one, where to buy it and how to cash it.In this video I'm going to walk you through the step-by-step process on how to fill out a money order. To complete a Rent Receipt, ensure it contains the following information: The payment method (e.g. Make sure that you put your name and your unit number. Learn how to write a proof of rent payment letter for your tenants in minutes. Download our free proof of payment letter to use right away. Find all of Domu's free, printable Chicago apartment lease agreement forms here. Please be aware that forms will be displayed in a NEW browser window. Application Denial Form.