To control whether or not your Splash Intro page displays, first click on the Portfolio icon and click on the splash intro tab.
From there, click on the Page Settings tab. The first setting will be "Activate splash intro page?".
Select Yes to turn your Splash page on, and select No to turn your Splash page off.
After you've made your selection, click on save changes.
To make your change live, make sure to go to publish and click on publish now.