Manager:
Manager is the person who
Decides on execution of reviews
Allocates time in project schedules
Determine if the review objectives have been met
Moderator:
Moderator is the person who:
Leads the review, including planning and running of meeting
Follows up after meeting
Author:
The author is the person who has created the item to be reviewed. The author may also be asked questions within the review
Reviewer:
The reviewers are the attendees of the review who attempt to find errors in the item under review. They should come from different perspectives in order to provide a well balanced review of the item.
Scribe:
The scribe is the person who is responsible for documenting the issues raised during the process of the review meeting.