Sanderxpander
What do you mean you "can't make it work"? What specifically is going wrong for you?
The example of how to make it work because it is a different daw in the video and we dont have input keys for side chaining. After hours of fustration and trying different things I figured out how to get a signal to it
1. Put the plugin as an FX on your source track
2. On the track of comparison create a send back to the FX plugin source track. When you create a the send you should see your source track as an option.
That is as far as I got next is to figure how to use this plugin in multiple tracks keeping the same source