Comply with 8 CCR 10820 (http://www.dir.ca.gov/t8/10820.html) in every respect. Take it to the WCAB office from which you obtained the final F&A, after the time to file appeals has run. If the clerk seems confused, ask to see the I&A officer.
In 34 years of practice in workers' comp, I've never heard of a certified copy of the F & A so I'm not sure such a thing even exists. Why would you need a certified copy? I suppose you would write to the judge and ask what the procedure would be.
Are you planning on having a sheriff execute your award? If so, there are probably a lot more hoops that you'll need to jump through. Once finalized, a workers' compensation award is considered a judgment, just like you would receive in civil court. But I'm fairly certain that you won't get a sheriff to drive over to an insurance company and do some type of collections for you without exhausting a bunch of other administrative remedies.