Multiple value options for a condition in custom report?

I'm trying to modify a Media Details report to only show data from a particular set of Networker media pools. I have one or more pools that I want to exclude from the report. Is this possible? I only seem to be able to either exclude a single pool or report on a single pool.

My condition is "And Pool Equal to (or Not equal to) VALUE" and I would like to have a list of options for VALUE (e.g. ATO, NDMP, Exchange).

Thanks.