Thank you Lillie,
sorry about my late reply, I was quite busy copying a Dies irae (by Hamerik) Requiem, Op. 34: Dies irae - YouTube - on Dorico desktop version…
I think you could leave it in the iPad version manual with an addition (external keyboard only).
Or one could set a new Key Command for moving backwards. Setting new Key Commands in Doric iPad version can’t be done with internal keyboard though: Key commands - dorico-for-iPad