Magento 2 Custom Registration Fields allows the admin to use a radio button to allow the customer to choose an option from the available options on the registration page. Admin creates the radio button to enable them to be visible at the front end of the registration page. With Magento 2 Custom Registration Form, you need to enter the required value such as input validation for store owner, input field sort order, display field In form, display field in form, and choose has parent.