There are two routes for changing or modifying a trip, dependant on the type of travel and when the trip was booked and if it has already been ticketed.
1. Air / Rail / Car Changes before ticketing (straight after booking) & All Hotels
Option 1 - Trips booked more than 24 hours ago
Step 1 - Click on 'Travel'
Step 2 - Hover with your mouse over the end of the line of the trip you want to view. Click on the eyeball symbol that appears.
This will take you to the trip in the booking tool where you can view the trip and make modifications.
Note - The list of trips won't include trips made in the past 24 hours. Please see the second option how you can view trips booked in the past 24 hours.