In order to create such menu as you can see on this page http://richer.artstudioworks.net/features/free-support-and-updates/, you need to have one parent page and the other pages connected to it that will be the sections of this menu. The main point is that the pages should be created on the “side navigation” template.
For example, you have the parent page “Features”, and you need to create the side navigation menu for it which should contain different sections (retina, responsive, clean etc).
1) You will need the parent Features page to be created on the side navigation template:
2) You will need to create each section page on the side navigation template and set Features page as a parent for each: