Upon initially setting up the application, you will need to go to the Settings tab to configure your location's settings. Type in the URL of your site in the first box and tap the Update button. You should then see something like the image below (see below left).
You will then need to add your operators to the application.
Type in their first and last name in the boxes provided (as seen in the screenshot below and right) and tap Add. This adds them to the application, and will appear in the box at the bottom (right screenshot).