In certain Page modules such as the Journal, Form, Gallery, and Send Email page modules you can insert additional content within the page header or footer areas -- this will allow you to add images, text, and additional content at the top and bottom of your page, before and after the contents of the page, respectively.
Step 1 - Enter Structure Editing Mode
Enter Structure Mode in the top right of your screen.
Step 2 - Add a Page Header/Footer
Ciick to Add a Header/Footer.
Step 3 - Add Content
Step 4 - Save Content
After adding your content into the WYSIWYG editor, click save and close to apply your changes to your live site.
Step 5 - Modify Page Header/Footer (Optional)
If content is already added within a page's header or footer, Modify will be displayed instead of Add. Click the button to make changes to your existing content here.
Note: Picture Gallery modules allow for custom headers within multiple gallery configurations only; there is no page header element for single gallery display formats.