For some of these figures, you may need the proper morphs first. If you just have the free versions, you might not have the morphs to really change things around, other than their facial expressions. If you do have the morphs, you might need to Inject them into your model first. Look in your "Pose" folder, unless you've changed things around from the way DAZ installs them.

I'm certainly not a veteran at DAZ Studio, but I do enjoy playing with morphs... :)