For cPanel & WHM version 68
(WHM >> Home >> Backup >> Backup User Selection)
The Backup User Selection interface allows you to exclude user accounts from your scheduled backups.
Backup user selection
When you configure a backup in the Backup Configuration interface (WHM >> Home >> Backup >> Backup Configuration), your backups include user account information by default. To exclude a user account from your backups, set the On toggle to Off. The system saves your changes automatically.
To disable or enable all user account backups, click the checkbox menu and select the appropriate action.