You can close pages that you're not using at anytime and they won't display on your Site Menu. PLUS members can also add new pages (News Categories).
To close pages you're not using, login to your Admin and go to the Pages section of the Access folder. Use the drop down box next to the specific page and choose closed then click the update button at the bottom of the page to save the change.
PLUS members can add new pages that will display as links on your Site Menu. Go to the News folder and click "Add/Edit News Categories" in the upper right side of the page. You may add up to 16 pages/news categories. If you have already added new pages, use the "Select Category" drop down box (upper right) to access the appropriate category to add news items to that page.