It's described in the BridgePal/EBUScore Guide, downloadable from the BridgePal website. You need to set the path to BMPlayerDB.mdb (section 1 of the guide). Next, download the EBU player database (section 2 of the guide). Also, set the "Name Source" in BCS options to Player & EBU Names Table" in the Bridgemate II settings (Appendix 1 of the guide).