Dear Santosh,
please refre below
https://www-secure.symantec.com/connect/forums/symantec-dlp-policies-need-be-created
https://www-secure.symantec.com/connect/articles/dlp-policy-implementation-approach
https://www-secure.symantec.com/connect/forums/dlp-vontu-policy-templates
https://www-secure.symantec.com/connect/articles/symantec-dlp-policy-note-beginners