As soon as Advanced Navigation extension has been installed on your Magento ® 2 site, it is necessary to configure the extension settings on the backend in order to make it work in the way you require.
In order to start configuration, login to your Magento ® 2 admin panel and go to Stores > Configuration section.
Screenshot: Getting started
Under Configuration, choose “GOMAGE” > Advanced Navigation tab to access the extension settings.
Screenshot: Advanced Navigation settings