In Sibelius, there was a keyboard shortcut that would automatically add a harmony part above or below the selected note. The number 3, for example, would stack a third on top of a note. Holding shift (I think) would add the harmony below the note. Is there any way to add such harmonies in Dorico?
In the next update, due in days or weeks, there will be an interval popover that have similar functionality. It is explained in detail in the Discover Dorico video from October - available on YouTube.