[Our informal team of students] gathered in numbers from 3 to 20, and we gradually came to just having an appointed scribe noting down everybody's contribution and later mailing it to the participants and people who could not attend. You could directly tell the scribe there's something you want to talk about or comment later via e-mail, if you thought you need time to organize your thoughts. Which you should note down if you don't want to interrupt somebody regardless of whether you expect to be able to speak about them or not.