The Reservations page has been configured in SP Page Builder using the Reservations addon (exclusively tailored for this specific template) and the Button Group addon, and then assigned to your site navigation as a menu item. The screenshot below illustrates how these two addons are arranged to capture booking details and provide call-to-action buttons.

Note: If you installed via QuickStart, be sure to enter a valid restaurant email address in the Reservations addon settings to enable functional booking notifications.