Check the Parallels Desktop (Mac) guide for errors, spelling mistakes and if it is up to date.  Follow all links to make sure they're not stale. Step-by-step verify the instructions. Add any steps or info that is missing.

Are there any TODOs that still need to be added? Have any steps been missed or not explained right? 

Looks like there are no screenshots for this one, maybe you should take some of the important steps to give a more visual representation of what the user needs to do? Made sure to crop the images if needed!