Oh, I see. I thought you were referring to the channel linking function on the console.
So, you want Mixer 1 to change a value on Mixer 2?
First, you’ll have to determine if that parameter is being transmitted or not. Beside the module name, click the >_ icon to open the module log. Then operate a fader to make sure you’re seeing the RCP message. If that’s working, then try adjusting the Dynamics or EQ to see if you see a message. If you see a message, then what you’re asking can be done. If you don’t see a message, then it can’t be done, at least with the RCP module. See here for details on looking at the module log:
If you are interested in completely controlling one console from another, I would recommend checking out remotely-possible.