Installation is straight forward. You need to install the module same as any other extension
Install all the packages in the ordinary way.
In the Joomla administration navigate to Extensions →Manage.
Browse to the location where you downloaded the package, select it and click Upload File & Install.
After installing the package, the module will be installed and ready to use.
To use extra features you need to enable DJ-MegaMenu system plugin, it will display additional parameter tab in menu item form.