What are sub-users and how to create them?

You can create sub account to share forms created under your account. Sub accounts can be created by entering the user's email address. User will receive an invitation email from JotForm and the user has to sign-up first before he will be able to view the shared forms and submissions.

If the user is already a registered JotForm user, they can view the shared form by clicking on the Shared with you tab.

This guide should help you for better understanding on sub account user :  http://www.jotform.com/help/232-How-to-Share-Forms-with-a-Sub-Account-User

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