The easiest way is to just set it at 10-12 psi at 38-40 degrees for 10 days and then try it. That's what I do.
A faster way may be to set it at 30 psi for 36 hours, then purge and reset at 10-12 psi. It should carb up in three days that way.
I know some people set it at a high psi and shake the keg, but I've never known anyone who really had good results with that. It's foamy, and the sediment is all stirred up in it but you could probably carb it up in 30 minutes or so that way.
Broken Leg Brewery
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