This may be more a Finale-specific question than Garritan, but it may apply here.
Automatic expression in Human Playback is very useful, but it seems to be applied all-or-nothing. In my little first-timer composition, it sounds great for a solo violin part, but the string ensemble behind it comes off surging on each sustained note. I can override that by tying notes together across the board, but that is rather ugly-looking.
One way would be to use the Apply Human Playback plug-in to incorporate the HP data into the score as MIDI data and then selectively delete the Automatic Expression where it isn't wanted. I wonder if there's another way, though.
Any ideas, or advice that this belongs asked to Finale, appreciated.