I have been doing some levelling, fretting, and fret marker inlays, and I'm getting ready to do some logo inlays.
There aren't any routing templates like the ones we use for the body construction, the pieces are placed on the fingerboard for tracing, and then cavities are routed out by hand, as Val said, with a dremmel, base, and multiple bits.
Even though he's left-handed, James is a great teacher for this kind of work. It's amazing to see this piece come along.