There is no trick for that :( ...
The Contribution Protocol is the Legacy GVG Kayplso Protocol and only supports 4 Keyers and 4 MEs...Also IO of up to inputs 92....
For full tally interface of everything you would need to change over the protocol to the TSL UMD v5.0 Protocol that Acuity Supports and also reconfigure the Tally Controller accordingly.
Les
#Acuity