You can add any element to a page ans it will be added instantly to the pages Master Template.
To do this:
1. Select the element that you want to duplicate to all pages (in this example we will use the logo in the centre of the page)
<Insert Image>
2. Click the 'Show On All Pages' icon at the top of the settings panel and then the 'Show On All Pages' button in the message box that appears.
<Insert Image>
The icon is now blue, indicating that the selected element is part of the Master Template. It is best to check how the element appears on all the pages using the Master Template.