Hi,
I have a row containing:
Date entered
Name
Date of Birth (DOB)
Occurrences of Name + DOB this Month
Occurrences of Name + DOB within last 3 Months
Occurrences of Name + DOB within last 6 Months
I can manage the occurrences this month but haven't a clue how to calculate the 3 and 6 months ones. I have attached a sheet and would appreciate some guidance and help.
Thank you in advance.
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