Pivot Table and Group by Year, MOnth


I thought there was an easy way to group dates in a pivot table for example by year and then month and even weeks.  In the attached, I do not see how this can be done.   I thought I remembered seeing within the field list, for any date, it would furterh drill down to years, months, weeks even.  I do not see this functionality in the attached.  

How can I Group the attached pivot by year and then month?  I would then want to be able to filter for anyone of those criteria.

thank you for the help.  attached is in 2010.
pdvsaProject financeAsked:
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Professor JMicrosoft Excel ExpertCommented:
please find attached.
pdvsaProject financeAuthor Commented:
how did you do that?
Professor JMicrosoft Excel ExpertCommented:
the problem caused blocking the grouping was the column on the source data that had blank cells and also some cells with text.

I replaced blank and text with 1/1/1930  a dummy date and then refresh the pivot table and then filtered out the dummy date and then grouping worked , please see attachment.

please note that for a pivot to work the grouping of dates,  the source data needs Not to be blank nor any text.

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pdvsaProject financeAuthor Commented:
oh so I see for the grouping by year functionality to work then there cant be blanks or any text inthe columns?
pdvsaProject financeAuthor Commented:
I see you have to rt click the field and then select Year.
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