How to make splitscreen UI

So, I’m creating a pop up dialog box for my game, but I want it to be connected to any player in a splitscreen environment. For a scenario, there could be multiple players opening dialog boxes at the same time on their own corner of the screen.

However, this seems impossible because Input module component only acknowledges that only one player exists. The system in Unity only assumes there is one person controlling all the UI elements. I can’t seem to assign a different player to a different set of buttons.

What do I do then?

I put in a feature request for it here: https://feedback.unity3d.com/suggestions/ui-to-assume-not-every-game-is-single-player

Let’s end this horrible flaw in Unity.