When you open the procedure, the Create tab first appears. In the upper part of the tab you choose how to classify and select the list. There are a number of classification and selection alternatives you can use.
In the lower part of the window you will find two list types to choose from. You will also find two headings called Grace period and Alternatives which allows you to include already excepted overdue invoices.
Under printout samples, you can see samples of the different list types as well as comments regarding each list type.