How can I add an activity to the itinerary or edit an existing activity?
Go to the Trip Management Page and then click on the Trip Activities Tab. From here you click on the Add Activities button at the top of the itinerary, you can begin to add as little of as much information about that activity as you want to, including things like start and stop times, locations, confirmation numbers, etc. To edit an existing activity, simply click the edit link for that activity.