If you're creating hair groups in the Hair room, then the option to show or hide other objects is the first option under the Modify button in the hair grouping tool. Just uncheck the box.

If you're in the Pose room/tab, under the Figure menu, towards the bottom, there is an option for 'Show All Figures', right below the option for 'Hide Figure (Cntrl+H)

If that doesnt' work then you'll have to check the Visible box in the Properties dialogue box on the left, for each body part that is hidden.

 

~Shane