I hadn't tried using the Hierarchy Editor for hiding elements in a scene, but I gave it a go.   I think a better approach is a Python script called visActors in the Free Stuff.   It's by Mason and is called "Hide/Show Figure Python Script".   I found it again by searching on "visible".   It's just like the "Hide Figure" option in the Figure pull-down, except that you can go down the list of figures, ticking the ones you want to make invisible, which is much more convenient than repetitively selecting "Hide Figure".   If you tick a wrong box, you can correct the mistake there and then, without needing to use the global "Show All Figures" option.   The Hierarchy Editor is fine for making things invisible, but a bit of a pain, when you need to make them visible again.   One thing with visActors, though, if you do try it:  remember to close it before trying to do anything else with Poser, or you'll wonder why everything has suddenly stopped working.