You can manually add Members to the Membership Database, but more usually you will use an external source to load up Members.

This depends on the Scoring software you use.

1. Use the automatic upload/download feature provided with your Scoring Software, available with Scorebridge, EBUScore or as advised.
2. Otherwise, you will need to have a Membership Spreadsheet in csv format and use the "Import/Export" feature.
3. If you use ACBLScore, you will still need to use the "Import/Export" feature but Bridgewebs will accept an export file directly from ACBLScore, see  15.1.3 ACBL player file