I did not see this question from past postings, and cannot figure this out.

I now have a Fender Mustang II amp and a Behringer vamp 3. I have the cable going from the guitar to thevamp 3 to the mustang amp. Do I turn the various tones, etc on the Mustang II all the way down and just use the vamp 3, half way up and use them both, just use one or the other??

I am confused on this and cannot find information anywhere. Figured if anyone would know it would be the folks on this forum. Thanks in advance for your time and help