Back to my post. None of this has anything to do with the monitor feed unless you have a console set up to feed effects to that feed.
What you want may or may not be possible but you’ve given us no clue that lets us even guess.
It's a digital monitor, Midas, pretty high end. Whether they can/want "feed" me effects I'll have to ask. I have rehearsals on Wednesday so I can ask, but knowing my people, it will be moot.