I did a search of this board, didn't really find the answer to my question (but some tangents that might be useful later).
Is there a way to have chord marking produced in Roman Numeral Style? Yes, I am a dinosaur, I learned to analysis music using such a system. Since there were some tangential remarks, there must be a way or someone has written a plug-in for it. I have been writing choral music (the least) band and brass band music and actually bought the very first version of Sibelius way back in the dark ages to help me with my teaching and church choir.
I am now working on Barbershop Music. Analyzing chords this way would be easier for me and would take less time. Of course, one of the great things about Sibelius is that it takes the chore out of notating music leaving more time for creativity. I would hope this would have the same positive effect.
I am using Sib 7.5 on Mac OS 10.12
Thanks!
Jim