"stage manager's panel" for the Express 48/96 - documentation?

I am sure this information must be here somewhere and I'm just looking for it by the wrong name - I've attached a picture of the thing I know as the "stage manager's panel" and I would like very much to know how it and its brethren (one in the booth, one in the orchestra pit, one on the other side of backstage) interact with each other and especially with the Express 48/96. Surely there is an explanation here somewhere?  I'm hoping that information will help me not have the work lights on during the show again this year (argh!!) 

The thing in question is at the bottom left (the existing documentation is in the top half of the picture).  I would also be interested, although less urgently, in learning about the remote focus unit at the  bottom right.

Thanks, I hope!!

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