Three apparent modes of integration;
1 & 2 require that you have a custom domain, therefore a hosted Webflow site. 3 can be used on a webflow.io site.
The system appears to auto-translate content when it's requested, so if you request URL /x, it will check its cache and translate if needed.
Once this happens, you can access and improve on those translations in the WeGlot console.
Caveats;
It may be able to also handle RSS feeds, but this has not yet been tested.
When using the JS integration, you can switch languages also via querystring param, e.g. ?lang=de