What type of security features prevents someone that has stolen one of my employee's passwords from logging in on a new machine?

I'm interested in implementing Jotform but I'm worried about two factor. What type of security features prevents someone that has stolen one of my employee's passwords from logging in on a new machine?

If someone stole your employee's password, you can reset your password immediately by following this guide: https://www.jotform.com/help/489-How-to-reset-JotForm-account-password

We can only protect the collected data. Please check this link for more information: https://www.jotform.com/security/

You can also create a sub-user account instead of sharing the main account to your employee. For more information, please check this link: https://www.jotform.com/help/232-How-to-Share-Forms-with-a-Sub-Account-User