I haven't been involved since 2011, but I can answer some questions about this year. We are taking 6 finalists. Single Gender groups are elegible for finals. We will take the top 6 groups according to raw scores. And kudos to Jeff! You saved me a lot of looking up for the years I missed.
In past years, caption awards have included:
Best female soloist
Best male soloist
Best show concept
...and last year, they added the “heart of music award”