Adding or Removing Posts From The Latest Topics Widget

Hello,

Would someone mind giving me step by step instructions on how to add or remove certain forums newest posts from being displayed in the Latest Topics Widget? I only want the posts from a few hand picked sections to be displayed in the widget.

Thank You.

http://www.christinecarclubforum.com/

Sorry, I believe the only way to make that possible is if the forum is hidden from view to those you only want allow to see in the widget.