If I may, sometimes you'll have a panel with two 10-minute presentations. That makes 20 minutes of presentation. Think about a two-hour meeting, and 20 minutes; you have about 100 minutes. That means you could get through four rounds, or almost four.
Sometimes you have a panel and then you do a round, because you've divided your meeting into an hour and then a second hour. It means you really do the first round twice on the same day.
Sometimes, just because of the nature of the meeting, you may go through the first round, get partway through the second round, and reach your time limit, because you have another witness going on. Sometimes you continue at the second round, then back up to the first round, just to make sure. Very frankly, that's often at the discretion of the chair.
Sometimes I have found, in the special committee I'm doing, that the NDP gets squeezed at the last, every time, in the second round. I've been trying to find a way to make sure we don't always cut off either the Liberal or the NDP. In the PROC rotation, you could lose that last eight minutes. We've been noticing that. I'm trying to find ways in that other committee to make sure that over time there's balance.
I think the basic decision is whether you want a longer first round of seven, seven, seven, seven, which has pluses and minuses to it. Sometimes seven feels very long for a new MP. You can split that time so that you each have three and a half minutes. It's a little easier, frankly, to split seven than five.