Don't know a whole lot about the chesskid site but the following article has Live/Fast right on top:
http://www.chesskid.com/article/view/how-to-play-fast-slow-matches-and-tournaments2
How do I play 'fast chess' against my friends or kids in chesskid.com?
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perfect thanks. we both had to be "in fast chess" in order to see each other. we had been resorting to slow chess, which is pretty painful
I can play 'slow chess' with my kid in chesskid.com, but not 'fast chess.' How can we play fast chess?