Fill outer area

Hi all,

So, used to use Captivate for all my software courses, but I am giving it a go in Storyline. Does anybody know a quick way to draw a highlight box around an object and fill/shade the outer area so as to highlight just the area within the box? Easy to do in Captivate by choosing "fill outer area", haven't seen the same functionality in Storyline.

Thanks for the help,

Rich