Protruding elements

Is it possible to create elements that can be visible outside of the Hype stage? (e.g.: a header the size of the stage with with a drop down menu)

The issue: Responsive content can vary in height but you may want to keep something else vertically abutting the hype object. In my case, I want to create an inline set of markup objects, with the top object being a menu bar. I can set the markup object to make overflow visible (e.g., a drop-down menu) but how do I create a Hype document with a drop-down menu without making room on the stage to accommodate the drop-down?