So Dorico is designed to be intuitive, until it is completely opaque. There is absolutely no way on planet Earth that anyone wanting to insert a two-bar repeat would think to type "Shift-R, %2,2.” How is that considered a normal part of a modern interface?
But anyway it is kind of neat to have secret codes like this.
I wouldn’t call them cheat codes, they’re shortcuts. Rather than have to to type in 'repeat last two bars, group in 2" they’ve made it quicker and substantially less prone to error. This is one of those occasions where it really does pay to read the manual - these are examples of just a few of the popover entries for repeats.
Intuitive doesn’t mean you were born knowing how it works: it means that everything operates in a consistent and similar way. Once you’ve learnt that Shift - something adds an object to the score, you know that Shift -something else adds something else to score. You know that all the Shift things bring up a popover.
Finale has what it calls ‘metatools’, which are just keypresses to add various objects to the score. You have to learn that Bass Clef is 4 and Alto clef is 2. You have to learn that dynamics are 1 to 9. Tenuto is E. (?)
Many of Dorico’s popover commands don’t require any learning. I can type the actual letters of dynamics. For clefs, I can type existing names, like ‘bass’ or ‘f’, and for the alto clef ‘alto’ or ‘c3’. Most popover use real words, chord names, or obvious mnemonics.
But if that’s too arcane, you can alternatively select them from the side panel.
The popover isn’t the only way to group repeat bars, though. You can insert a bar repeat section from the Bars and Barlines section of the right panel, then use the properties in the bottom panel to group it the way you want. The popover’s quicker, of course, hence David’s term “shortcut”.