Exclude files and/or directories for specific account(s) per backup job, will not backup those files/directories for the account in a specific backup job.
In order to exclude directories/files for specific user, create new file USERNAME_JOBID.exclude in the path below:
For JetBackup 4.0 and above:
/usr/local/jetapps/usr/jetbackup/exclude
The file name should be in this pattern:
USERNAME_JOBID.exclude
Visit Exclude Files and Directories for syntax examples.