Hi @vpv,
Welcome to the Auth0 Community!
You are right.
The quote provided by you is trying to explain how to transfer roles from IDP to Auth0 instead of adding them manually.
I recommend checking this article if you want to assign roles in your IDP/SP and add those automatically in Auth0:
- How to Map SAML Attributes when Auth0 is the IDP in the SAML2 Addon
- Send roles as part of SAML assertion when Auth0 is the IdP
Thanks,
Timotei