With the Planner, there are three ways journeys and journey parts can be added to your calendar. Two of them from searches and one from the ‘Ticket details’ screen.
Note that it is only with the Planner that you can add journeys to your Calendar; the Live trains tab does not have this feature.
At the bottom of the Journey and the ‘Ticket details’ screens, there is an ‘Add to Calendar’ button.
You can also tap on the info box at the top of those screens to bring up a menu with an ‘Add to Calendar’ button.
And when you’ve purchased a ticket, you can go into the ‘Ticket details’ screen and add the journey to the Calendar from there.
To choose which of your calendars journeys are added to, or if you want to turn off emojis in the calendar event titles, open the Planner settings options.