Thanks for the info, the following from the wiring diagram is what confused me:
Id like to be able to do something with ESP, but that will be too advanced for me at this time, after I get the panel up and running Ill do some research on it.
I also have a 4009(-9001) NAC extender that was pulled from the system. According to the labels on the black plastic cover, AUX1 was being used as City2, although both were on bypass, the electricians were unsure why, but guessed it had something to do from when they uninstalled. There was also a DMP XR5SL tied into another one of the relays as a communicator. (they gave me this, but I’ve heard bad things about getting into used DMP stuff) So I think that explains most of the expansion done to the panel.
After a quick search ESP can only be done by a “the Expanded Simplex Programming (ESP) option must be ordered and programmed by local Simplex Branch Office Personnel.” although I still will try to find out some info on it, and possibly talk to the local Simplex branch.