Once you are inside a TRIP you will be able to see/add/edit more information using the General info tab.
Use the General info tab to edit the Headsign and Direction and add a useful Note that you (and the rest of the Mooviters) will only see inside the Moovit Editor. The note section is meant to help you keep data organized and understand if a trip has specific schedules, stops, or changes that the 'regular' trip doesn't.
To finish click Save.