To change the name or title of a field in a miniExtensions Form, take the following steps:
Go to your form's settings page
Select the field
Under Standard Options, enter a value inside "Custom Title". Leaving this blank will simply use the same field title as Airtable.
To remove the title from the form altogether, simply turn off Show Title.
The title of the field doesn't get changed inside Airtable. This feature just changes the title in the miniExtensions Form.