User permissions during cap deploy:setup

[andrewhavens]

I'm getting started with this cookbook, and following this tutorial. If I understand correctly, the apps user doesn't really do anything, and the deploy user is meant for using with Capistrano. However, when I run cap deploy:setup it fails to create the directories because it doesn't have permission to create the in the apps user's home directory. How is this intended to work? Should I be using the apps user for deploys? If so, what is the point of the deploy user (and vice versa). Or am I expected to manually create the directory for my app and grant ownership to the deploy user?