Silly question about Simi Folder

[SeriousGeorge]

I've tried digging up information about this and found a lot of people asking the same question but I never found an answer. Anyway I was recently introduced to the awesome Simi Folder; it's gorgeous and I absolutely love it. My only question is that when I create a new widget (say 3x1) it only allows me to pick one folder to go in the widget, but I've seen other people's screenshots that have more than one folder to the widget. I've tried digging around in menus and such but found no option to include other folders. The result is that I currently have a separate widget for each folder. Can someone please indicate what exactly I'm missing?