When your first sign up for Cognito Forms, you create your first organization. You can have as many organizations as you like, and each organization has their own set of forms. Your organizations are separate from your account, which is the profile you created when you signed up. Learn more about managing your account profile.
Organizations can add additional users once the organization has been upgraded from the Individual - Free plan. Once your user has been invited, all they have to do is look out for the email and accept the invitation. Learn more about adding or inviting users to your organizations.