C1 is a light chourus, so you can use it for regular hymns. Because its not so heavy, I'll use it just to get the "key click" effect.
C2 and C3 are a lot heavier, so I would use it for fouse raising, shouts, backing up te preacher, and uptempo old school hymns.
V1, I use that for hymns a lot, becaus its also very light
V3 Vibrato gives you a theatre organ effect. you can use it during old school shouts, Organ solos, and wherever else you se it appropriate.
V2;s sound is inbetween V1 and V3
As for percusion, Its only gonna work on the Top manual (the swell), using the B preset key. When on, it will cancel out you 1' drawbar, unless you have your tech wire te perc., to another bar. Itsmostly used by jazz cats. I rarely hear any ospel organist use it. It can be used if you have a chance to solo during a break in the song etc...
The first swich turns it on or off.
Then there is one that will allow you to chose between 2nd and 3rd harmonics.
Then there is one that les you choose slow or fast decay. That will make the sound go away fast or it will stick around a bit longer.
If yiou still need help, let us konw.
I'm gonna try to have a video on all this stuff when I get a chance