My interpretation at the time was that these permissions were based off the user's permissions in the proof--it's not based on whether or not they have a proof license. You can have a license, and be assigned to review someone's proof as a reviewer, and not have ANY permissions to do anything other than review (my interpretation). To have the ability to resolve comments, I thought you needed to use the feature as a way to manually assign elevated permissions to people who are given visibility to a proof (such as reviewers) but are not the authors/moderators. At the time, I just glossed over the languaging around this, because Workfront tends to think reviewers don't have other roles (such as being proof generators in their own right). Real life is a bit messier. -skye