Click on the drop-down menu opposite Configuration.
Click on the “ADD NEW” button in the drop-down menu.
Fill in the following fields in the Apple Sign In Setting pop-up:
Name: Enter the Apple Sign In Settings name of the application you are developing.
Team Id: Identifies your developer team registered in the Apple Developer program. You can find this ID in the Apple Developer portal.
Sign In Certificate: This is a special certificate required for Apple Sign In. You can generate this certificate through your Apple Developer account and download and upload it here.