Below steps show you how you can use the custom fields in your app, such as entering data into it using CRM profiles.
1. Admin > My Customers > Registered Users or Guests. The list of all your customers, displays in the grid. Search and click on the 'Profile' button next to the customer.
2. Inside profile > Click on the 'Edit.'
3. Move on to the 'Custom' tab. Your custom field displays with the tutorial text. If you have created more 'custom-fields' they will be displayed here.