In one of Pret-a-3D's tutorials, Paolo mentions being able to click on a zone in Poser's Preview window in order to identify the material you want to edit in Reality.  There's just one problem with that, and I'm looking for a solution.

Any object can have several different material zones which can only be selected from within Poser's Material Room, but the Material Room doesn't highlight those zones in the Preview window.

If, for example, I want to edit the jewerly of a staff, is there a way to visually identify which part of the staff's mesh the jewelry encompasses so I can better decide how I want to edit the jewelry in Reality?