There are three ways to add passwords to the exposed password table. The first means is to manually enter the words in the top box and pressing the "Add passwords" button.
The second means is to import a file containing words to add. Enter the name of a file existing on the server in the Filename box and press the "Submit" button.
The third means is to upload a file. Click the "Choose File" button and choose the local file. Then press the "Submit" button.