Basically, all you need to do is a simple transcription job. They provide you with their style guide, there's no time limit. Just show you know how to type and hear correctly. Very simple, it's just a stress reliever to know that you're given as much time as you need. The only skills you need are proper grammar, spelling, and not mixing words up. For example, saying the wrong form of "there" will NOT get you hired here. A professional company requires professional standards.