This module divide 3 areas. 
Upper area is ATTENUATORS, 
This area function same to "995 ATTENUATORS" , but this CP35 has 4 volumes and outputs. 
Normally use Attenuators, input signal add upper left side inputs, and return each gain down control voltage with volume, and output to down side . 
 
Next one is CP35 only. 
If you want to change the control voltage BASE LINE voltage to UP or DOWN, you patch -6V or 6V to OUTPUTS connector, you can change the control voltage center up to 6V and down to -6V. 
This function create a new sound effects. 
(some module has electric crash from outside HIGH voltage, please check and use carefully. As your own risk.)