Layered nav widget > ratings filter

Hello,

With the “woocommerce layered nav” widget, how can I create a filter based on the product ratings ?

I have done some filters (such as Material, Price) here : https://tjc.apps-1and1.net/shop
but I do not understand how i can do it for the product ratings…

Thanks for your help !

https://www.ads-software.com/plugins/woocommerce/