indeed, i quickly discovered this was not working as one might expect. for example, primary sort on Genre, and then secondary sort on Set within each genre.
Ideally we could decide what column to sort on, then within that sorted order, sort on another column, then within that, sort on a third etc. Intensity would not need to be accompanied by any Group info; it could just be a number. In this way I could rank only the styles I want to choose from by intensity. I’m also assuming ‘intensity’ could be defined then determined objectively.