I'm currently using the below array equation to count records on one sheet
that match certain criteria on another sheet:
{=COUNT(MATCH(Tickets!G:G, 'Staff'!A2:A15, 0))}

I'm not sure how to modify it so that it also only counts records found in a
given month, e.g., return a count of matching records that were created in
March. There is a date field associated with each record.

Ideas?