I am trying to create a custom filter with 5 or 6 counties from 2 different regions in Sweden that I would like to apply to "Solved Mysteries". But it seems like I can only add one area to the filter (I only add Sweden and Göteborg and add/save, nothing else). I thought I could add Göteborg and Mölndal counties to the filter.
I know realise I can't even use Custom Filter on Solved Mysteries but the question about creating a custom area with Custom Filter remains. Or is it an other way to achieve this?