Advanced Custom Fields Plugin will enable you to use unlimited custom fields and field groups with WordPress Download Manager. You can create different custom field groups as per your package needs. This Add-on will be helpful for you if you want to show additional package information in a formatted way. Also, you can use this add-on to extend the email lock feature, when need to capture additional data from site visitors.

Advanced Custom Fields Add-on Features:

1. Create Unlimited Field Groups
2. Create Unlimited Fields
3. Easy to use form field generator
4. Optional/Required form field
5. 6 Different Field Type Support
6. Auto generate template tag and PHP code snippet
7. New! Add additional fields with user registration form
8. New! Customize front-end package form
9. New! Add Custom Field with Email Lock Form, you can capture additional information from the user before downloading the package
10. Export custom data captured with email lock
11. Custom field groups support, in case you need to collect different types of info information from users for different downloads.

Admin Interface for Creating Custom Fields:

Generated Meta Box Preview:

Add additional fields with wordpress user registration form:

Change Log: