Re: Just one side
"Meetings should be constrained by the size of the teapot: 4 or 5 mugs at most; brown jenny on special occasions."
With experience I learned not to be upset by the size of the original meeting. A quick look round inevitably showed the following:
A few strangers, sent along by someone or other and looking slightly dazed.
The occasional known trouble maker.
Two (seldom more) other people who'd helped do the work on other projects.
Once the formalities were done, just work with the last lot as before, but sound out the first lot as some of them might actually know what's what.