Computer Configuration > Policies > Centrify Settings > Mac OS X Settings > Services > Enable Windows Sharing
Allow users on Windows computers access to shared folders on the local computer through SMB/CIFS file shares.
Enabling this group policy is the same as opening the Sharing system preference, selecting File Sharing, then clicking the Options button and selecting the Share Files and Folders using SMB option.
On Mac OS X Servers, this policy has no effect.
This policy can take effect dynamically at the next group policy refresh interval without rebooting the computer.