How do I setup tracks to receive a one for one match of my Musicxml.xml file from Finale?

When I import a Music xml file, I want to create matching tracks in BIAB. I get the default of Piano, drums, bass, guitar melody, etc... My Musicxml file has staffs for
Alto Sax
Trumpet
Tenor Sax
Trombone
Guitar
Piano
Bass
Drums

The rhythm section maps well, however I do not have corresponding tracks specifically for the horns. How do I add additional tracks in BIAB and change Tracks (ie Melody) so I can import each line on a separate track? I’ll accept pointers to other user guide sections and forums. I’ve searched for a couple of days, and found nothing... I’m probably not querying properly?