Once you're ready to book a trip in the app, you'll need to add the passengers or guests as "Travelers" in the app. Here's how!
Head to your setting and tap on "Travelers."
From here, you can add a new traveler, or edit/delete an existing traveler.
Make sure that your name, birthday, and gender is entered exactly as it appears on your passport or other travel ID, otherwise you could face boarding issues at the airport. You may also add optional assistance (wheelchair, etc.) as well as any traveler numbers you may have (Nexus, TSA Precheck, etc.).
If you'd like to remove a traveler from your profile, tap on "Delete."