Bc2000 (for the BCF2000 & BCR2000)

Hi guys,
Just bought a Behringer B-Control Nano BCN44. I just want to do a 
simple thing with it - control the volume of 4 different patches 
within a Performance (Setup) on a Roland Juno-Stage. I'm lost! The 
book (to me, anyway) isn't clear at all. There is a Preset called "4 
Channel Volume Control". Using that, the furthest I can get is to get 
each knob blinking in Edit mode. In the manual, I can't see any 
explanation of how to assign (or change) various things to the knobs. 
Does anyone know of any Tutorial or video or anything on the internet 
that would help me? I googled everything I could think of and can't 
find any help - not even a support group for the Nano. This group 
seems to be the closest thing, so I'm hoping someone can help me. 
Thanks for any help with this!