Steps to set Summary since and to dates:

1. Click on the date to the right of Since. 

2. Select a date on the calendar.
(Date can not be selected before the first protocol that was taken.)

3. Click on the date to the right of to.

4. Select a date on the calendar.
(Date can not be selected past the last protocol that was taken.)

The new summary will then be displayed.  

If no protocols were completed within the selected time frame it will display.