Sharing specific folders on Twonky

Is there a way to share only certain folders over a home network like you can on WD2go? I want to share movies with all computers at home, but not all my files backed up on MBL. I see where I can simply block certain computers/media players, but that’s not my desire. For instance, Share movies and music, but not documents and pictures. 

Sure. Put the media in their own share, and enable media sharing only for those shares.