The "Subpage Default" is your default sub page.  The "Style Guide" page has been setup to display your site default styles.  The "Subpage Fullwidth" template displays without the sidebar.

The checkbox "Hide Page Title" removes the title from the page and the optional Header Sub Heading field (page description).

• The index.php is your home template and assigned automatically to your home page.  This templates operates the same as your full width template.
• The index.php has a countdown timer that will display a countdown to the latest event published to the "Live Event" category.  The event website field will be used as the live link.   The countdown will show when there is 3 hours or less to the event going live.