OK, I'm not sure, but I don't think this functionality exists yet. I tend to brainstorm a lot in the storyboards. It's my process
Anyway, I find that sometime I get plots that sprawl out of control. What I want to do is group some of the plots into a subplot. I'd love to be able to select some plot points on the storyboard and move them all to a new subplot. Doing it manually is a lot of work, and I just don't plan my plots in a fashion that allows me to know where things needs to be at the start. So, just another feature to add to the ever growing wishlist.
