To enable Multi-Factor Authentication (MFA) for Resco Cloud (on-prem), you will need to connect your Resco Cloud to a custom Active Directory Federation Services (ADFS), please follow the steps available at https://docs.resco.net/wiki/Connect_Resco_Cloud_to_custom_ADFS. Enabling MFA is an optional setup and is not required.
The App Password that is set up by the technician in the Resco Mobile App (MobileTech) for MFA is separate from the technician's user password. Technicians will need to keep the App Password in a safe location because this password cannot be recovered.