In this example we have used two menus: one is positioned relative to an element and the other positioned relative to an image of the page.
This is how the two menus will look in your Joomla site:

Click on the image to view the example live
The menu that has replaced the default "top menu" of Joomla is the one that has used the "Relative to an Element" positioning method. In order to position this menu the following steps were taken:
- Previewed our Joomla site in our browser
- Viewed the current page's source code
- Found the element where the "top menu" is positioned - in this case it is a <div id="pillmenu"> element (it is the same in all the site's pages)
- Copied the ID property of the element into the "Custom ID" property of the "Relative to an Element" tab in the Positioning options (as shown in image1 below)

Image 1
The other menu has replaced the default "main menu" of Joomla. In order to position that menu we have used the "Relative to an Image" positioning method, and thus taken the following steps:
- Added a new Custom HTML "Module" in Joomla that contains simply a transparent 1x1 image called 'allwebmenusanchor.gif' (included in the Joomla Addin's folder where AllWebMenus is installed in your machine)
- Selected the "Relative to an Image" tab in the Positioning options of the menu
- Added the name of the image 'allwebmenusanchor.gif' into the Image Filename field (as shown in image2 below)
In addition, the second menu is using the Floating Menu feature (applied by changing the <Menu Floats on Scroll> property in the application) in order to keep the menu visible in the same position while scrolling using smooth (you can also use immediate) scroll.
You can also use the "Advanced Floating Menu Add-in" for conditional floating effects!

Image 2