(a) Request to coordinate add-on case A request to coordinate an add-on case must comply with the requirements of rules 3.520 through 3.523, except that the request must be submitted to the coordination trial judge under Code of Civil Procedure section 404.4, with proof of service of one copy on the Chair of the Judicial Council and proof of service as required by rule 3.510. (Subd (a) amended effective January 1, 2016; previously amended effective January 1, 2005, and January 1, 2007.) (b) Opposition