Configuring an Authoritative Time Server with Group Policy Using WMI Filtering
Brian Singleton has posted on article on configuring w32time via Group Policy using WMI on the AskDS Blog. You can check it out here: https://blogs.technet.com/askds/archive/2008/11/13/configuring-an-authoritative-time-server-with-group-policy-using-wmi-filtering.aspx