In my last three projects, I have made circles of my characters. At the beginning of the book, there are individual circles of interaction. Then somebody steps out of their circle and begins to weave them all together.
For example, in Dungeon, I had a three major circles. There was the circle of the upper floors of the castle. This included the royal family and those that served them closely. There was a circle of the servants at the bottom. This includes Molly and the large, red-faced cook and others. And there was a dungeon circle of guards and inmates. The princess ends up being my thread that weaves through all three social circles.
In BB (my newest project), there is the village circle, the abandoned mansion circle, and the royal court circle. We have yet to see how they will weave together...
How do you organize your characters?