Posts and pages are separate things in WordPress.
If you are talking about the four links at the bottom with images, those are homepage pages. You must be using a static front page in order to activate them.
Set up a static home page.
Then, activate and set up homepage panes:
Graphene Options >> General Options >> Homepage Panes
Make sure the box labeled “Disable homepage panes” is NOT ticked.
“Type of content to show” — select “Posts and/or pages”
In the box labeled “Posts and/or pages to display” add the ID numbers of the pages you would like to display.