I think I got it from your explanation, thank you! I'm familiar with Dungeon World, and felt it could be that the sharing of spotlight had something to do with Lore and Wits (as in: spend to add the thing). I would too like to see your take in detailing the spotlight sharing, but I understand now the constraints on words/pages sums up why it wasn't specified.
I'm gonna have this game in my sleeve for our next one shot! Thank you again, and keep up the great work!