Use below given attribute to set Detached layout style(Applicable in Vertical layout only).

How to add new menu items/change menu items?

In order to add, change or remove menu items from the left side navigation, simply edit in file templates/partials/sidebar.html. The change would reflect in all the html files automatically. We are using gulp which would actually take care of including the templates/partials/sidebar.html file content in the all html pages.