Copying Charts w/o absolute refs in data series?
 

I have a chart with it's source data to the right of it. The source
data references sumif criteria also within that same bunch of rows. I
wanted to make several copies of these rows and chart down the sheet,
with a view to changing the sumif criteria and thus having several
DIFFERENT charts.
Trouble is I can't figure out how to NOT have the copied charts
referencing the first chart's source data. Been googling these groups
with no success. Can someone give me clue, or better still a solution?
Please don't respond with an email, as I am at work and my groups
email is sent to my home email.

TIA

Troy