How do you do this?

GOOOD KEK M8 LEL.

Fucking casual, I can tell you're new to the whole weeaboo scene so let me thoroughly educate you sexually. Anime is being dubbed by pros; fans almost never take on a whole series to dub. They generally dub a scene they found funny or maybe an episode. I also find it funny how you mention translations yet subbed anime has A LOT more translation issues. Strangely a good fansub ALWAYS beats an official translation such as CrunchyRoll, since they tend to be fucking retarded all the time.

And not all dubs are bad per se, there's a couple good dubs that beat the Japs version. Watching subbed certainly is more convenient but you can't expect an entry-level bitch to understand that m8.