Yes, you can use some CSS and js to achieve this along with a Hierarchical Viewer. Here is an example of building a mega menu with one.

Hi,

Its surely possible, but you will have to use some of the accordions menu which supports this kind of deel level. Kentico will generate the corresponding <ul> for you but it is up to you to give it the functionality. For this I would recommend you to try searching for some jQuery menus on google and pick up the one you like and then try to implement it in Kentico.

You might need to use standart reapeater for creating this menu as it offer better customization features (CSS list menu could not be used in this case).

Kind regards,
Richard Sustek