concerning your question: it takes some time to get familiar with the vienna instrument pro. the tutorial videos by vsl are very good. and there are good shortcuts when editing in standalone mode to copy instrument settings from one violin player to the other inside a patch. i got the tip here in the forum and it was very helpful! so it took me a couple of hours making "my" section from scratch… but it's still in progress.
once done the actual musical work is easy. for dynamics i use the TEControl breath controller, trills are played on the keyboard, short notes on extra tracks, so no key switches in all my examples.