In reply to jimgramze.

@Jim: You can create a split view by way of Window > Split Horizontally, and then open the same layout in both halves of the split if you wish, so this kind of thing will be easily possible in Dorico. No Roman numeral symbols as yet, I'm afraid, but when we start working on chord symbols we will consider whether or not we can also implement Roman numerals, and possible function symbols, at the same time.