Is there a way to give a user access to the sandbox/preview environment without being an admin? We have a developer interested in learning more about WF and is interested in working in the sandbox, but she is not an admin, and we want to keep our admins to a minimum.

Thanks Robert, Where exactly do you type in the code? I went to Reports > Calendar > Edit Calendar Item, then the only options are tasks, projects, or issues. I've tried it in each, but have not seen the results that I expected. I just want to be able to overlay the time-off for everyone on my tea...