Hi FJ.

If you have their latest, you don't have to use the one included with PG release.
Now, that we have Midi Chord track, any version of their synths should work with BIAB.

Steps to set it up:
Go to Options>preferences>OutputChords
There is a checkmark (should be checked): Write chords to track number: Select unused Utility track here.
Close out of the menu.

When you regenerate, everything will update on the mixer, and you will see yellow "Chords" name on the mixer track your chose. Go to the plugin section in the mixer, choose SynthMaster from the list for that "Chords" track.
Done.

It will feed block chords to the SynthMaster (and they should also update when you change things on chord sheet)
Now you can use SynthMaster GUI to pick Pads or Arpeggios or anything else. It should all be in sync to main arrangement and obey transport buttons.

I hope this helps.

M.