No worries, and indeed helpful 🙂
Adding people after you've contacted the first person appears to be the way to do it. I hadn't noticed this option before.
So when you've established a connection with the first person you press the ... button at the bottom right where you get to see Add people. I haven't actually tried adding a second person yet, but did a chat with myself (two iPads in the same house) and noticed that option come up.
I hope to try it properly out soon.