Alleygate is a mono gate. It uses the left & right input channels – one is input signal, one is gate signal. When the gate signal drops below zero the input signal will be entirely muted. In this respect it is has two states:
on or off.
Setup should be easy: pan one signal one way, the other another way. Send them both to the plugin. You can adjust which channel is the gate signal alongside dry/wet in the plugin parameters.
Apologies for the very poor quality pictures. They were done in a bit of a hurry.
I haven’t had a chance to test out this plug in as yet, but I hope to very soon and I’ll post more as soon as possible.