Step 1: Change your view from 'List View' to 'Tab View'
Step 2: Click on to the 'Travelers Information' tab in the trip planner page.
Step 3: Click into the 'Add Travelers Here' field and start typing the desired name. If the client isn't in your CRM already then click 'add new' and fill out the minimum fields on the profile card ( First name, Last name, Primary Email address) so that way you can add them to your trip.
Step 4: Save the profile card and add the name