Now we move on to the extension I've written specifically for chilling out about people coming to the door, which for the first time will involve other people. I do hope it's helpful.
If you want to volunteer to help us practice, I am all for it. The more people we get to practice with, the more likely it is to generalize. In a week or two, when I've seen how it's working, I will probably have a better idea about how I want to schedule that and will put out a call for assistance. There could well be cookies involved. :)
 Well, am writing -- I've got a 6-part section based around the other people having already been hanging around the house for a while, so that they're not too exciting to start with, but I'm still working on the subsequent parts in which the people are actually approaching the house from outside, being all new and exciting and stuff.