CoLab reviews can have one of 4 statuses currently: Open, In Progress, Revision Required, and Closed.
Reviews have an "Open" status when a review is created, but no action has been taken yet.
Reviews have an "In Progress" status once activity on the review has started - this could be a reviewer leaving feedback or a reviewer submitting their review without requesting changes.
Reviews have a "Revisions Required" status when one or more reviewers request changes. When a new revision is uploaded, the review will return to "In Progress"
Reviews have a "Closed" status once the review is complete and officially closed. Reviews can be closed manually by users with the permission to close reviews or automatically when the company setting is enabled to close reviews when all reviewers approve a review.