There are two ways of using some kind of filter in the Report editor - one is based on layer filters set up in the program, and the second is separate Filtering in the directory tree in the Report editor (same as Grouping and Sorting). At this moment, this only hides objects with a zero value of filtering type. It would be great if this could also have a property to set some filter value, like filter only some specified locations or just some types of objects (especially useful when used with Type: Other: your custom type of object).