Contact info:
To find an med-arbitrator, contact Mediate BC, the ADR Institute of BC, or Access Pro Bono's Lawyer Referral Service. Ask for a med-arbitrator who handles family issues.
Note that this is still a new legal option in BC. MediateBC has published Standards of Conduct for Med-Arbitrators, developed training and experience requirements, and established a med-arb roster.
More info:
You and your partner would need to discuss with the med-arbitrator what the process will be, and at what point you'll stop mediation and start arbitration. This might be based on time, budget, or reaching a point where no more progress can be made. Because you and your partner choose the med-arbitrator, you must abide by whatever decisions they make.