If the backup drive is accessible and the user has not paused the backup, Genie Timeline will run on an adaptive CDP approach, IntelliCDP, where small files that constantly change will be backed up more often than larger files, unless set by user. If the drive is reconnected after a backup was missed, it will automatically run without any intervention.
Notes
The IntelliCDP varies based on the version. On the Pro version, it will run every 3 minutes, while in the home version it will run every 10 minutes, and the free edition will run every half hour.
Full system protection backups will run every 24 hours.