The app is separated into two parts, the list selection on the left side, and the details section on the right.
List selection can be Contacts, Encounters, or Help. When in portrait mode (iPad is oriented with the home button on the bottom or top), the details section is the only section visible.
Access the left side list selection by tapping on the text button at the top left of the detail view. The text button, when tapped on, will show the label Contacts, Encounters, or Help as appropriate.