Thanks! You kinda addressed something else I was going to ask too, about whether or not you could move the location of the pad around in your own house.
I've read a ton of stuff here and elsewhere about the different approaches to potty training, and at this point it's all just a big ball of mush in my brain!

I know people get sick of answering these kinds of questions over and over, but it's so helpful for those of us who are lacking in practical/personal experience! (so...thanks again!)
How do you teach them to go "on command"? By saying "go potty" (or whatever) when you see them DO it, so they associate the words?