Two windows in different modes tiled on screen simultaneously

In the most recent Dorico video on Play Mode improvements, AH has two windows with both play and also the score visible. How do you do that? I can’t for the life of me figure out how to do that. I’ve figured out tabs of different layout, but not how to view play mode and the score at the same time.

Window > New Window. Then put one window on one side of the screen, and the other on the other side of the screen (either manually, or by using a built-in Windows/Mac OS feature, or by using a third-party app).

Ah, so there’s not an in-app way to do it. Okay, thanks.

Might be nice to have the option to tile 2 (or 3) tabs as a quick way of doing this.