Emu XL-7 & MP-7 User's Group

I assigned Track 15 to Channel 15A Destination Both and have an XL-7 
Arp pattern and set it to "ON" in preset edit mode.  Then I realtime 
recorded that track using rubber pads.  Then saved to preset.  I now 
want to enable track 15 for Channel 15B also with destination Both 
and use the same XL-7 Arp pattern and now set arp to "OFF" in preset 
edit mode.  This time I want to use Grid recording instead of 
realtime.  I now saved my preset to another name other than what I 
had designated 15A.  So I hope that when I hit track 15, both 
channels A and B should play simultaneously, one in Arp ON mode and 
the other in grid Arp OFF mode.  Hmm, for some reason I can't figure 
out why both channels are affected by either on or off only and not 
have both playing at the same time.  I made sure MIDI 15A is set to 
ON and MIDI 15B is set to on.  So then I started using the "multi-
setup" feature hoping that saving arp on/off to multisetup will solve 
the situation but it didn't work.  I set arp ON for track 15 Channel 
15A and arp OFF for Channel 15B in the preview mode then I saved it 
to the newly named Multisetup bank.  I had already referred to page 
101 in the manual but still couldn't figure it out!  Anyone have any 
clue?  I hope I am making sense here.  :-)

By the way, so far I've only been able to save factory arps, how do 
you save user arps?

Thanks for any help!