Hi everyone. I'm struggling with how to do the following: I want a window that is logically split into 3 areas: A top area that is always present, and contains various items that update based on what happens in other portions of the window, but the top area doesn't change (size, color, location) ever. A middle area that depends on a selection in the third area A set of "middle area descriptions" that control what is seen in the middle area. Those last two feel like a "tab view controller" with various view controllers, so doing that is straightforward EXCEPT for the top part of the window that doesn't change. Anyone have an idea how to do this or even where to get started? Right now I'm faking it - I have a tab view controller and each of the subviews explicitly contains the same view in the same place for the top part of the view. That approach feels both like a total hack AND extremely fragile.