Hello TomL,
BESR V7.0.0.20350 is the Base release and BESR V7.0.1.21808 is the Service Pack One release. Scheduling incrementals is done exactly the same method.
On the 'Backup Time' screen, press the 'Advanced...' button.
Check 'Schedule' box and select days to create incrementals.
Check box 'Run more than once per day' and set frequency.
[OK]
Complete rest of Backup Job settings.