A lawyer may not act for anyone in a matter the lawyer dealt with personally and substantially as a judge, adjudicative officer, law clerk to such an officer, arbitrator, mediator or other neutral, unless every party consents in writing after full information, and may not negotiate employment with a party or its lawyer while serving in such a role (a law clerk may, once the judge has been told). The firm may take the matter only if the disqualified lawyer is promptly walled off, takes no share of the fee, and the parties and any tribunal are promptly notified in writing. A partisan arbitrator on a multi-member panel may later represent the party that appointed them.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.