The important thing is that it's not the whips who decide any of this, nor, interestingly, is it the House itself; it is actually the Deputy Speaker.
The subject matter is largely decided by a ballot. You put in a new ballot for a particular slot. You can put in for 30, 60 or 90 minutes, and take your chance on what comes out.
Now, I don't think it's a secret that in addition to being a ballot, there are some informal aspects—what one might call speaker's choices. In other words, some subjects that come out of the ballot are perhaps not entirely through the process of sortition. I don't know how it's done, but the subjects somehow turn up. I think members are able to make a particularly strong case for a subject.
There is also, I think, an informal party balance kept through the week, so that if there are more tickets going into the ballot than there are places, there's a reasonable balance among the various parties as to which member of which party gets which slot. That has nothing to do with the whips. It would simply mean that on a given day, it isn't coincidence that on the Tuesday I spoke of.... Well, we actually have one Conservative and four Labour members, but I don't know who put in or who wanted those particular days. I notice the balance is different the next day. There are three Conservative, one Labour and one SNP member on Wednesday of next week. We don't generally have all the same party, as far as I can see. I've never asked.
The standing order is very simple. In Standing Order No. 10, we just said there shall be...well, you can read it. It wasn't difficult to set it up by Standing Orders, because all the Standing Orders, except those specifically excluded, apply in Westminster Hall. There are a few excluded, which probably are not of interest to you, and I'm sure that Charles Robert will be able to construct one for you. It was partly about the powers of the Chair being potentially slightly different.
The procedures are the same and the conventions are the same. They are about having to turn up at the beginning and come back at the end, how you speak, where you speak from—you speak from your place. If you see what I mean, it wasn't as though we were setting up a completely new style of debating chamber. The powers of the Chair to.... We have time limits now in Westminster Hall, which there weren't originally. There were time limits that were introduced in the chamber, and then after a few years the chairman of ways and means himself said he thought we should have time limits in Westminster Hall. There was a little difficulty in introducing them, for electronic reasons.
Otherwise it broadly reflects the chamber. There's very little difference.