Sometimes, you may want to hide a help item in the VisualSP Help panel. Some possible scenarios could be if your help panel is becoming cluttered with too many help items, or a help item is only applicable to a limited number of users. You can do this by opening the help item with the help item Editor and assigning a URL filter to the help item:
Add a URLs that begin with filter and target it to http://hidden. This will effectively hide the help item everywhere on your site.