I need quick ref foor my brother in LV.

3 CO 4 ext. Intercom, PA.

He knows the wiring, needs initialization. He and i know the 6x16, 12x24, 48/96 triad, but at moments notice i am not familiar with STSe. I'm in Indiana, can't drive down the street and help him. Anyone who can help with the basic init. to set the thing going?