Graphing only specific items in metrics report

Hi

I want to find out if the following is possible:

A server that is monitored, has 15 filesystems, all of them need to be
monitored,
but the customer isn't interested in the state of / or /var, but only in the
production filesystems.
How can I create a metrics report of only 3 of the 15 filesystems that is
being monitored on the box?
Would I need to create a separate monitoring group for these?
I'm using hobbit 4.2.0

Thanks
Stef