You will see all the available applications/websites. You can click on any of your application to securely login through Single-Sign On without having to enter any login credentials.
Browser Extension application:
You can easily configure your Browser Extension app just by clicking on three dots at the upper-right corner of the un-configured application and click on Edit.
You will see Add Credential pop-up. Click on Add New Credential and add desired Username and Password. Click on Save to configure the application.