To fill out a money order you need to first fill out the who the payee is, the purchasers information and sign it. I'm going to show you how to fill out a money order from the USPS or the United States Postal Service.Edit, sign, and share sample money order form online. No need to install software, just go to DocHub, and sign up instantly and for free. Edit, sign, and share money order form online. Learn how to fill out a Financial Statement Form, which you need for many types of cases in Massachusetts Probate and Family Court. Massachusetts does not authenticate federal or out-of-state documents. N Amended Order of Conditions a.