Important: The Tree-like Categories Menu add-on requires the Flyout Categories Menu add-on to be installed and enabled.
To install the add-on, follow the Installing Add-ons from X-Cart App Store instructions.
Once installed, the add-on automatically converts the category menu representation into a tree-like type.
The add-on inherits the settings of the Flyout Categories Menu add-on. Hence, if you want to change anything, follow the procedure described here.