Mikeferd,
There is no template (that I'm aware of) for setting up 4 channel receives on the korg n1. Simply transmit the channel data from your master kbd to the n1. This will work just fine in program mode. The knobs will effect the one sound shown on the display in single, and in split or layer it effect will both of the sounds that are shown on the display. Multi mode is only necessary when more than 16 midi channels are being used.