Hi Cheryl,
Modify the Record Selection Formula to bring in data for the last 365 days. It would look like this:
{Date Field} IN DateAdd('d', -365, CurrentDate) To CurrentDate
Now, a simple count on the Patient Field should give the Patients seen in the last 365 days.
You'd, however, need a formula for Last Full Week. Create a formula with this code:
If {Date Field} IN LastFullWeek then
{Field to Count}
Use this formula field with a Distinct Count function as the Chart's third series.
-Abhilash