You can create custom headers and footers for each of your workbooks or quizes. Simply write content using the editor or write html above and below the "%%%content%%%" hash. DO NOT DELETE THE CONTENT HASH! Any content you create above the hash is the header and will show up as the header of every page of your workbook or quiz. Any content you create below the content hash will be your footer. Now change the "Use Custom Header/Footer" radio button to "Yes" and click "Save Customization."

Custom headers and footers