i have a list of data and i will like to create graphs for a particular
person when needed.here is the format of my raw data.

Dept Country Name Jan Feb Mar
1 sg john 50 25 55
alex 40 15 20
1 hk alex 15 20 30

as one person might appear in different country or dept,what can i do to
create graph of a particular person so that all data concern with that person
no matter which dept or country will be use for the graph to reflect the
various figure in various country or dept. i cant use specific cell reference
as the data is generated dynamically everyday or anytime when needed so the
data will alway be changing.