Exluding specific folder from SEP scan

Hello,

I have SEPM 12.1.5 with 300 SEP clients on several locations.

I need to exclude from schedule scan "users desktop" and "users documents" folders for all workstation in a specify group.

I see "Centralized Exception" solution but i read on symantec forum :

The SEP client does not support the use of UNC paths in exceptions.

I found two prefix : COMMONDESKTOP_DIRECTORY and COMMON_DOCUMENTS.

Someone has already use them ?

Are there other solutions ?

Thanks.

Sébastien