David, it’s not yet possible to do what you want to do automatically but Daniel’s talked about something that’s internally known as a flow-break that will eventually make it possible to have “front-matter” (title, composer etc.) anywhere on a page, theoretically automatically.
My method is a total pain in the backside to implement initially, but once it’s setup the tweaking is much quicker than manually copying and shifting frames. I spent about four hours today and yesterday laying out a Piano/Vocal score that comprises 105 flows over 140 pages (many of which are just sound effects cues with no actual music whatsoever) and, to be honest, it would’ve been half that if Dorico didn’t grind to a halt every time I tried to nudge a frame.
It’s still way quicker for this than Sibelius, and there’s a great advantage to Dorico being able to store titles and cues for music-less flows, which is that ALL of this information is stored in Project Info fields. This means that if this show gets orchestrated the information is already in the right places for the band parts (although there’s still some manual layout work to do.)
I suspect in that situation I’d probably be lazy and resort to having just three master pages - one First, one Default and one extra that has a new flow starting halfway down. After all, the band really don’t need to know about the many sound effects cues!