The way the program is set up now, each customer can have as many properties as you need. That customer's invoice will then show each property serviced within the line items.
However, in order to do this specific task you requested, you need to set up different customer accounts for each property. Then within each customer account enter one property and then add a separate test property. The point of adding a second test property is that it will force Gopher to print out the property description above the line item.
This will do what you need it to. We appreciate your input and we will work on making this easier.
Let me know if you have any further questions.