Yes, you can!  Click on the "Edit Patient" button to the right of the flow sheet:

Then, you can add up to 4 options to the problem list.  Note: when you add or remove options from this problem list, it will change the problem list on ALL flowsheets.  For example, if on day 2 the FLUTD cat has diarrhea and you add that to the problem list, it will appear on the first day's problem list as well.