😞, sorry, it has been several years. I personally do not have any document of it. Only thing I can say is it is pretty straightforward as my understanding. The best document is their own admin document. We used keycloak for internal development. For customer I remember they used Ping Identity Server. Its configuration was much more complex and the document was more difficult to read than keycloak.
I only can confirm you that it was working pretty fine for my own purpose. Just could not remember any more details