I am creating a pivot table for a department in a healthcare clinic that I
work for. They want to run a report that shows by year the number of
people that have gotten labs done in another facility. The Date column
is formatted as mm/dd/yy. Is there away that I can group the dates together
by year? All I am able to do is show each individual date. If have tried the
following suggestion:

Right-click on the Date field button in the pivot table
Choose Group and Show DetailGroup
Select Years, click OK

When I follow these steps, Excel says that I "Can not group that selection".
Any ideas???

Thanks for your help.