What can 'generate notes from chordsymbols' do for me in arranging?

I have to arrange for a coverband with trumpet 1, trumpet 2, alto sax and trombone.
I notate some licks on the trumpet 1. How can I generate the other 3 parts with some nice voice-leading and poppy sound?

I would say the feature doesn’t compose or arrange for you. If you know enough to say “nice voice-leading” you can write better parts yourself, I’m sure.