Just to clarify what I'm hearing you say, if you're going to follow that, the first round would be as laid out and whether it's seven or ten minutes, it doesn't matter and then after that it alternates until everyone who wants to speak has had an opportunity to do so.
Alors, si j'ai bien compris, le premier tour serait comme prévu — peu importe s'il s'agit de sept ou de dix minutes — et ensuite, il y aurait alternance jusqu'à ce que tout le monde ait la possibilité de prendre la parole.