Post and pages uses the featured image option. If you want to display a picture above the title of the post or page follow these steps.
Create a new post or page. In the right sidebar scroll down until you see the option Featured Image. Push the Set featured image link and selector upload a image of your choice. Add a title and content to the page and hit Publish.
Navigate to Genesis > Theme Settings. Set the Archive settings under Content Archives. Don’t set Include the Featured image. This will add another featured image.