Hi there,
Check below and see if they help:
https://www.symantec.com/connect/forums/dlp-and-titus#comment-9187841
https://www.youtube.com/watch?v=K-ArgGbIZLs
That said, enhancement requests may, or may not be implemented. As such, I would recommend going to the respective page, clicking the option to sign up for notifications, and see if they add this functionality.
You might also want to contact Titus and find out from them if this is possible:
https://www.titus.com/solutions-data-loss-prevention.php
Thanks!