To add webpages, you create the Web Feature, then create a piece of Content within it:
  1. Navigate to Content > Content Management System  
  2. Hover over the name of the site and click Manage Website  
  3. Click Content Management > Folder view
  4. Click New,  and choose Webpage
  5. Give the page a title and location
  6. Click the content tab
  7. Add desired content
  8. Click Create
Note: There are other ways to create Web pages, such as with Inline Content, Content Listings and User-Generated Content.