Follow the steps below on how to add a new day to the beginning of your itinerary:
1. Click +New Day
Click + New Day at the top of the list of days.
2. Drag the new day to the top of the list of days, and drop
OR
1. Click +New Day
2. Change The Date
When you add a new day, you can set its date to be before the trip’s first day. In this case, I added a new day and changed the date to May 20th (one day before the trip starts).
