Dpns -- when to join yarn not on video?

Hello,

I am looking at the dpns knitting video and as far as I can tell she doesn’t show or say when to join the yarn. Isn’t this the whole point of dpn knitting? Am I missing something on the video?

Thanks,
Sandra

http://www.cometosilver.com/socks/SockClass_Beginning.htm

Here is a sock tutorial by one of our own, which has great pictures of starting out with dpns.