I find the Monthly Reports feature to be very useful, but I want to filter to exclude certain data. For example, I'd like to filter to exclude the a certain sale type. This could either be accomplished by directly excluding the sales type or having a multi-selector that allows me to show several other sales types all at once and simply leave the one(s) I'd like to leave out unchecked.

Basically I'd like to expand the filters you currently have for monthly reports to allow multi-selection.