I am setting up a job and wish to save shift totals to a csv files. My shifts end at 8:00am and 4pm each day.

Page Setup

Setup the page settings for shift totals mode. This will make the daily totals shift totals and they will be cleared at the end of the shift.
Enter the times need for the end of shift.

Custom Report Setup

Save Day Total Values

When setting up the custom report, add items in the report to save the lines day total values

Setup shift end times

Setup the times that match the end of shift.

Set Custom Times and enter the times to indicate the end of shift, enter a time and click the Add button.
The report will save two lines of data per day, one at 8:00 am and one at 4:00 pm.