Exporting a CSV from Apple Numbers
Numbers is a spreadsheet program developed by Apple which is included in every OS X installation. If you want to export your entries from Numbers into Gravity Forms / GravityView, this guide is for you!
Under the File menu, select Export To

Then, Select CSV
Finally, Click Next and Save Your File

Importing Your File into Gravity Forms
To import your CSV file into Gravity Forms, follow this guide.
Finally, Click Next and Save Your File