Multiple guitars in one plugin?

Hey all, I’m fairly new to the NDSP world and got the Archetype Nolly recently. I have been playing around with settings etc and I was wondering how does one go about getting what appears to be multiple guitars going through one plugin, or one plugin linked to another, so the controls are linked?

For example, in this video at about 5:07, he messes with the master volume and it affects both guitars in stereo. Or is he just running one DI track with some stereo widening or something?

I am using Reaper for this. Thanks a bunch for any help.

You can do this by running the plugin on your guitar bus. If you have 2 separate tracks with two different instances of the plugin changing one won’t effect the other.