UNIVERSITY OF WISCONSIN River Falls
Become familiar with creating new pages before creating a new child subsite.
A child site is a separate area/page list that appears in your left-side navigation with a plus sign (+) next to it to indicate a topic that has related pages. Those related pages, if marked for inclusion in the navigation, are displayed below when you click the plus sign.
NOTE: If you already have a page that you are turning into a child site main page, once you have created the child site MOVE the page into the child site and RENAME it Index.