Depending on the setup, it may actually be easier to have a monitor that’s the same size you’d use for a rectangular MM, and then block the corners off with either a wide frame or drywall if it’s truly inset. From there, you can just use CSS to “bump” modules left, right, up, or down on the screen so they’re positioned right into the curves of the glass. As long as it’s not gonna be changed a whole lot, that might work just fine also…