Donny, to my knowledge, there is no separate EQ systems other than the vocal processor (Mic) EQ system, and the Global EQ system. However, while you are working at redoing those registrations, you CAN change the effects, including the EQ, on voices associated with the registration and save those changes so they are recalled when the registration is called up.
Now, you can change the EQ of style parts using the onboard Style Creator, then rename the style to a User Style and save it in the Expansion/User Style area or the USB drive. It's all fairly easy to accomplish, but it does take a bit of time and effort.
PSR-S950, Bose L1 Compact, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!