CCS discovery is configured from the Worldview Discovery settings.
From ITCM you can only configure Auto Deployment which I have not seen used for quite a few years!
The first Green Book we ever did has a chapter on how to configure.
The Green Books have been put under the Additional Documentation https://techdocs.broadcom.com/us/en/ca-enterprise-software/business-management/clarity-client-automation/14-0/additional-product-documentation.html
The discovery and deployment chapter is https://techdocs.broadcom.com/us/en/ca-enterprise-software/business-management/clarity-client-automation/14-0/additional-product-documentation/desktop-and-server-management/discovery-and-deployment.html
Looking at the documentation not everything was imported (missing the deployment section) from the Green Book so I have attached the original.
The Auto Deployment proved very unreliable and I have not seen it used in many years. You can use the deployment wizard and query for unmanaged assets.