Its very easy to remove and delete an existing Library, Group or Tab.

  1. Right mouse click on the Family Browser palette and go to "Family Browser Builder".
  2. Highlight the items you wish to remove
  3. Click on the "Remove Selected" Button.  This removes the items from the layout tree but at this stage hasn't removed the items from the Database.  If you wish to cancel the operation click on the cancel button to exit the wizard.
  4. To confirm the deletion click on the "Next" button.