Hi, recently I started using authelia, and can’t understand how I need to use it, and how do I share it with others

Before I had bitwarden, kept all my passwords there, and used the passwords to login to every service. Also in every service I had 2FA and/or FIDO.

But now I have authelia, and I’m trying to understand where should be the main password, and what services do I bypass, and etc

And the most important, how do I explain people how to use it, do I create them authelia credentials and send, or how?

Thank you