Once you have the administrative templates installed:

1. Create a new GPO and click Edit.

2. Go to Computer Templates > Google Chrome > Content Settings

3. Open the AutoSelectCertificateForUrls policy and select Enable and click on the button at the bottom.

4. Enter the following link under the window

   {"pattern":"https://saml.getidee.de","filter":{"ISSUER":{"CN":"Enter CN Name"}}}
   

   Copy

   Note: Please replace "Enter CN Name" with the Common Name of the certificate server who's issuing the certificates

5. Click Save and Okay