New pages are created in the page structure area this way:
1) Click 'create page'
2) Name the page (the page name will appear in the site navigation menu)
3) Choose page location (choose either 'main page' or 'sub page to an existing main page')
4) Choose page template (The page template defines the main layout - where the content placeholders are located on the page).
The page template can be changed at any time.