You need to use the Supernova in it's Performance mode. Programs can
then be assigned to any of the 8 parts of a Performance. See the help
pdf "a guide to using the Supernova II Multitimbrally with a sequencer"
for full detailed instructions download pdf.
http://www.novationmusic.com/support.asp?supportid=16&view=TandT
http://www.novationmusic.com/support.asp?supportid=16&view=TandT