The plugin JW Pattern can apply crescendi to multiple staves, if that is what you need.
First: I can not help you with your problem, sorry. Second: I have used Finale more or less every day for 22 years. About once a year I try HyperScribe, and the result is the same: "No, this i...
Instead of staff style (which works nice): In the part's score manager (sic!), check the box "Unlink All Instruments in This Part". Then you can apply any transposition/clef to this part only.
A guess here (I'm away from my studio right now): Use the repeat tool>make a custom repeat text where you want your piece to end and set it to "stop on pass no. 1". You can hide the repeat text.
Actually, the Score Manager concept is a brilliant one. If you at some point need to change instrument mid-score or switch to another sound library, the Score Manager is a perfect tool and gives a...
The triplet icon does not represent a rhythmic figure; it represents the tuplet tool, which is used for creating and editing all kinds of tuplets (duplets, triplets, quadruplets etc.)