Confirm field type makes it easy to require a user to verify their email address, password or text area, URL. Below you can find a guide explaining how to set it up for the Email Address Field.
For instance: you need to create an email first.
Then create a confirmation field by choosing Type: confirm.
Fill out the Confirm Field ID (Field ID of first email field)
Furthermore, you can make a similar setup for text, text area, and URL field types.