the V2 is such a wonderful synth, but lacks the comfort of switching presets the way you do with all the other synths.
you have to open the panning column for the track you want the V2 to play in.
then enter a note in the first row, enter “92” in the panning column and the last four digits of the effect column represent the program/preset number.
for example (assuming that the V2 is instrument 03):
C-4 03 … 92 0006
…
…
.
will switch to preset #6 of the V2.
when changing programs, you have to wait a moment until the V2 has actually performed the switch - you wont have audio the first time you hit the play button.
so when entering a different program number, hit the play pattern/song button, wait a second and then hit it again and you should hear the sound of the selected preset.
have fun, the V2 rules - because it sounds like no other and is really easy on the CPU because it was written for realtime usage to accompany 3D visuals, where CPU resources are crucial.