If using RealTracks, it's a matter of programming and only requires two tracks. One track will contain Soloist Instrument 1 and the second track will contain a Medley of both Soloist Instruments to Trade 2's.
Then, it's a matter of muting and un-muting the two Soloist tracks at the appropriate Chorus's.
It's a similar but different process if using UserTracks or MIDI.
Preparation using RealTracks:If necessary, add your soloist instrument to the Style. ie: RT1530 Guitar
Add a second Track of that Soloist instrument. ie: RT1530 Guitar
From the RealTracks Picker, Select the 2nd soloist track. Select the Medley Button.
In the Medley Window, the first track of the Medley sub-mixer should have your soloist instrument, ie: RT1530 Guitar.
In the 2nd track, select a Soloist RT to be the 2nd Soloist instrument for Trade Two's.ie:RT1956 Sax.
In the Medley Window, select '2 Bars'.
Ok to exit the Medley Window.
Program the song. .choruses 1 - 4: To play just the selected style track.In Bar Settings.
Select Chorus 1. Mute both of the Soloist Tracks at Bar 1.
.choruses 5 & 6: adding soloist tracks.In Bar Settings.
Select Chorus 5 - Un-Mute the Soloist 1 Track at Bar 1. Plays the Soloist lead Guitar.
.choruses 7 - 9: trading 2's with a soloist track.In Bar Settings.
Select Chorus 7 - Mute the Soloist 1 Track at Bar 1.
- Un-Mute the Soloist 2 Track that has the Medley Programming at Bar 1. Plays the Guitar and Sax.
.chorus 10: Play just the selected style track.In Bar Settings.
Select Chorus 10 - Mute both Soloist Tracks at Bar 1.