Source
Mandatory
Upload the file that you would like to import here. Supported are vCard (.vcf), Excel (.xlsx and .xls) and CSV (.csv and .tsv) files.

Add new people
Whether new people, which do not yet exist in CashCtrl, should be imported.

Complement existing people
Whether people that already exist in CashCtrl, should be updated. New information (like additional e-mail addresses) is thereby added to the existing person.

Category for new people
You can set the same category for all new people that are imported. Categories from the file are ignored. Categories of already existing people are not changed.