I saw that link and i've read some of the 12.5 documentation, but i'm confused on the functionality of the endpoint agent on a Mac OSX.
"IMPROVED! DLP Endpoint Agent discovers data stored on Mac OS X; discovers, monitors and prevents events on Microsoft Windows 8.1 Desktop;" - This hints that you can only do Data at Rest (DAR) scanning on a Mac OSX and does not have Monitor or prevent capabilities.