Filters wnd volumns

Publisher/Series is an ok filter but publishers have a habbit of creating “volumns” within titles. I’d like to filter on Publisher/Series but have those results have a sub filter for volumns so the main dropdown (like Marvel Comics) only shows main titles (like Captain Marvel) and clicking on it drops down to show the collection of Volumns. Clicking a Volumn show the titles on the right side as always.

Is this possible or is a change needed on the Web side.

Series Group is the way to go for that.

So use Publisher / Series Group / Series.

You may have to fill in the Series Group field for more comics though.