Hover over the page or post you want to show in the slider and note the number of the post/page (i.e. 1470).
Click on Apperance -> Graphene Options in the sidebar.
Expand slider options if necessary (click on the triangle).
Scroll down to “Posts and/or pages to display”.
The numbers in the text field correspond to the posts/pages that are displayed currently and their order.
Enter the number of the post/page that you want to have rotate. Be sure to keep the numbers separated by commas.
Scroll down and click “save all options”.