Separate panels, all in one scene, then just enable/disable on the fly. I suppose if you have different people working on the UI elements, you might want a different scene, but then I would load them all into the same scene myself anyway.
Rakkarage - gotchya, they do demo it in the “3D scene”.
Indeed you just have to fool around and disable them.
It seems incredibly more sensible to me to use different canvasses – but that creates the problem that, simply, they “draw on top of each other” in the editor screen.
(As far as I know, you can’t move the “nominal” position on the editor screen, of a canvas. So they all stack up.) (I guess, you could use a separate gui camera for each one, to move them around on the editor that way.)
that’s a lousy way to work man! it’s like in the old days on iOS when you had stuff stacked up on views, so you would turn off or “slide over” the ones you were not working on. (not they have container views, thank goodness)