There is a top level checkbox for each Custom Filter to “Return values that do not match the filter rules” But it doesn’t have the granularity for excluding 1 rule but not the others within a Custom Filter. You’d have to have to do a multi-stage with all the inclusions in one Custom Filter and the exclusions in a separate one.
- The rule order is “last edited” not “created”. And there no override controls. So an ugly re-ordering workaround is to re-edit all the Rules in inverse order of how you want them stacked.
Reference
The following 2010 feature request talks about re-ordering Filters but it seems to mean Rules.
0004474: Add a method of re-ordering custom filters