Norton 360 Support - View Files Included in Backup

You can view files included in backup grouped by categories by clicking each category. Every file selected for Norton backup has a check alongside its name. Such files will be included in backup, the next time Norton 360 performs scheduled backup.

Un-checking a file doesn't mean you are marking it for removal. It only means, that this file will not be included in the backup archive the next time backup is performed.