How to use ember-simple-auth?

I don’t understand How to use this ember-cli-simple-auth? I’m using ember-cli v1.13.8

I have a back-end server with Express. I have a login page. with a select as a window_id and password.

I don’t understand if I need passport, or I just get the record of the window_di and password from the form, then do the authentication using ember.

I’m a bit confusing about using authentication in Ember.

I read

https://github.com/simplabs/ember-simple-auth and I didn’t understand clearly.

Thanks