Change input channel of MG2 plugin

I’musing an interface with 2 input.
I want to change input channels in MG2 plugin, but input channel is fixed 1st channel.
I want to change input channel from 1st channel to 2nd input.
I want to know how to change input Chanel.


In the standalone app, like this:-

If it’s a plugin in a DAW then the channel strip in the DAW is the place to look…