Problem with Pivot Table Fields In Field List Not in Source Data

[AP]

Hello, I typically do not use pivot tables and I have inherited one.
There are two fields, Month, and QTR, that are available in the field
list but they are not fields from the source range>? I am assuming
there is a way to create a custom field that is a grouping of
another,
in this case date, however I cannot seem to find it. I checked the
user formulas and there are none. Is there a way to find this?
Thanks

 

[Debra Dalgleish]

You can group a date field by year, month, quarter, etc., and that will
create additional fields in the field list. There's information here:

http://www.contextures.com/xlPivot07.html

To rename the fields, you can type over the default name on the field
button, e.g. change Quarters to QTR.