To export a group of customers, or all customers - you can use the checkboxes on the left hand side of the Customers page. You'll see an option to "Select all" once you select one or more customers.
Then, to export that list of selected customers - just click the "Download" button on the top right, and you'll get the option to choose the exact data fields (Name, Age, Date of Birth, Organization, etc) that you want the export to include.
This will download your customer list as a CSV file to your device.
