Auto Redirect the user to IDP (Redirect to IDP if user not logged in)
This feature will restrict the site to only logged in users, this will redirect the users to IDP if logged in session is not found. This feature can be used to protect the site. Through this, users who are trying to access the site but are not logged in will be redirected to the IDP for authentication.
Auto Redirect the user to IDP for '/administrator/' and back end login for Administrator and Manager: This feature will auto redirect the administrator and manager if they want to access the backend of your site.
Enable Backend Login for Super User, admin, Manager and their child groups
By enabling this feature, you can directly login into your Joomla sites backend panel (Admin Panel) if and only if the role of the user coming from IdP is either Admin or Super User.
But in some cases if you have restricted your Admin URL by using some security extensions then, in that case, you can add your Admin URL in the Custom Admin URL textfield.
Ignore special characters from the Email for Register/Login: This feature will allow users to register or log in with an email that contains special characters.
If auto-redirect is enabled and if you don't want to redirect to IDP for the admin account then you can use the backdoor URL to access your Joomla backend without SSO.
By enabling this feature, you can force the users to provide their credentials on IdP each time they attempt to login. This feature can be used wherever there are multiple users working on a device. It might happen that a user attempts to login by some other user’s credentials. This feature will force every time, to first provide the credentials on IDP for authentication and then allows to login.