Explanation
1- Configure Workspace ONE Access to use the same AD domain as VMware Horizon
2- Synchronize Horizon AD users to the Workspace ONE Access service using Directory Sync
3- Create one or more virtual apps collections for the VMware Horizon pods in Workspace ONE Access
4- Configure the SAML authenticator on the Horizon Connection Server
5- Verify that users see assigned resources in Workspace ONE catalog and when clicked the resource triggers the SAML SSO process
https://docs.vmware.com/en/VMware-Workspace-ONE-Access/services/ws1-access-resources/GUID-D7B47EF