You will need to make your element 'sticky' - Utilities > Web Sticky/Stretchy > Sticky (radio button) and then position it off the page area. This will cause the element to glue itself to the edge of the screen.
In the screenshots I was making a placeholder for a form. The yellow circle has a rectangle grouped with it. If you make the rectangle 99% transparent, it will give the effect of pushing the circle away from the edge of the screen.
Chris, thanks for that tip. Very useful to know.
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