If Kirt runs this as in years past, some of the teams are composed by the fact that certain players will be on the same team for Cup 2010 later in the month in the Netherlands. The remaining teams will be put together on a basis that I'm not sure of: maybe it's random, maybe it's intended to really highlight a stud by providing her with the best supporting cast, maybe it's intended to create parity. As I said, I'm really not sure how the non-Cup players are placed together. And then there is a schedule for each team to play its games. There will be highly sophisticated and public radar timing of pitching speed, so discuss with your DD how she is going to deal mentally with that. A member of the QDSN staff generally watches a complete game and selects a "Best of the Best" for that game (essentially an MVP of that game). After the Showcase is over, certain offensive and defensive stats are posted online for the attending coaches.
My description may be a little stale since we were last there with DD in 2006, but perhaps some more recent attendees can point out where the description is out of date. I know the Whitesides are always looking for new ways to provide College Coaches with what they want to see.