RPO (Recovery Point Objective) is what would help the administrator schedule the frequency of the backup job for a critical business application that is running in a private cloud. RPO is a metric that measures how much data can be lost or how far back in time a recovery point can be without causing significant impact or damage. RPO can help to schedule the frequency of the backup job by determining how often backups should be performed to minimize data loss in case of a disruption or disaster.