Assignment algorithm for automatically making assignments between documents and document reviewers for a review process. If the automated assignments need adjusting, a coordinator can manually refine the assignment(s). The assignment algorithm facilitates the automated assignment process based on inputs related to a constraint and/or a preference. The constraints and preferences include, but are not limited to, a conflict of interest, a minimum number of reviews, a maximum number of submissions, a partial assignment, bidding preferences, and health metrics. Once the assignments have been made, histograms can be generated that present an overview of certain health metrics, further allowing refinement of the assignment process.