A timetable comprises one or more coach routes. Timetables can be created and edited in the Timetables card in Config.
Start by creating a new timetable and giving it a name that you and parents will recognise.
Return to the Timetables card and click to Open the timetable.
Turn on the coach routes as required.
Finally you can associate a timetable with a travel day by going into the Academic Years card, opening the year required and clicking the menu adjacent to any travel day. In the Timetable drop-down, select the timetable associated with that travel day.