That feature is not available on SEP12 SBE at this time. You could post this to the ideas section for our dev team to add to the list.
https://www-secure.symantec.com/connect/security/ideas
You can only uninstall the Symantec Endpoint Protection Small Business Edition client by using the Windows Add or Remove Programs utility.
Note: If the client software uses a policy that blocks hardware devices, the devices are blocked after you uninstall the software. Use the Windows Device Manager to unblock the devices.