Mailist to discuss all issues regarding the Digitech GSP-2101 Guitar FX Processor

I just purchased a  Digitech IPS 33B - Super Harmony Machine - whats 
the best / proper way to add it into my rack?

The three main components are ... 

GSP 2101   |   IPS 33B    |  Marshall 8008

others include tuner, power conditioner, wireless ...

I imagine I need to use the midi ins, outs, or thrus, but in which 
order?   I want to use the 2101 mainly, but would like to program it 
to call on the IPS for certain patches.

Any assistance would be appreciated - thanks.