Loop pedal project

[DonB]

I have a project in mind.

Here is a pic


So i want to have main channel select button with a standard on/off loop for my od/boost for when on amps gain channel. Then have a loop from my amps fx loop with simple on/off function for each fx line.

Anyone have any idea how to wire up the channel select and main loop section? My amps vhannel select is via pulse method.

I can make the fx loop as that one is simple. Just have had no luck with channel select/od loop.