CMS Made Simple Forums

Is it possible to only show certain 'child' menu items when a user is logged in? 

What i mean is:
-no user logged in: see only parent (when clicked on: show paged with login form)
    eg: RTCLeden
   
-when logged in: see parent and child (or multiple childrend):
  eg: RTCLeden
          - Doc's
          - Pictures
          - whatever

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