Thank you DC Ron. Thank you very much.
I don't see too much jazz here.
I have been using the program since 1995 and in the past I thought it was made mainly for jazz smile given the people who have been working behind the scene.
I will play another samba soon.

I am not sure if I understood you correctly. For me the automatic harmonization works very well. FINALE adopted BIAB harmonizations. Sometimes, I edit harmonization and commonly the problem is with the 5th or when I want to replace 1st note of a chord with 9th.
Also, I use lots of chords. Usually, two per single measure so the harmonization is vivid.
For illustration here:

especially part B of the song where I use even three chords per bar, a nightmare for a pianist given the tempo.
This harmonization is done by BIAB based on the melody and chords.
The flute line is mine.

I think the biggest challenge for an arranger is to write an independent melody line that is complimentary to the main melody line and this new line doesn't obfuscate the main melody line.

I wish the program had more soloist tracks to enable richer arrangements.
Now, I know that one can enter notes in the user tracks but at the moment I don't know how to assign an instrument to them.
Thank you.
TomZ