I've been on CSRT staff for a while.
The RTPG (Planning guide), as mentioned by others, is a 'must'.
I usually do the committee breakout, CM is separate at our RT,
not that we haven't combined groups for breakouts when we deem them
appropriate, or when we don't have enough staff to cover.
We don't do the 30-35 minutes suggested in the RTPG, we run 10-15.
(We do games/crafts as a group not in breakouts.)
Our groups meetings start by asking if there is any specific topic
anybody wants to bring up. This lets people ask the questions
they need answers for, you will find the dialog among the people
from different packs very helpful. If there are no 'hot' topics,
or if there is time I move to the suggested topic in the RTPG.
Remember it's a guide, NOT the LAW. ;-)