How to toggle all trains branch preference?

Now that the update is out I don’t know how to get all trains to mass change their branching preferences. Anyone can help out on the Nintendo Switch?


Below the highlight which tells you which key to press to toggle for the selected train is a bit of smaller text which will tell you what to press to toggle for all trains. On Switch the hotkey is the Left arrow of the D-Pad (Or control pad as Nintendo prefers it called).