You can link to other pages in your group.
Pages is designed to open to the front page for a group, if there is a front page selected. Click the View All Pages button to select a page from the Pages Index.
Select Link Location
In the Rich Content Editor, place your cursor where you wish to insert the link.
In the Content Selector, click the name of the page you want to insert into the Rich Content Editor . The name of the page will appear in the Rich Content Editor and flash yellow. Then the name will turn blue, indicating it is a link .