External Practice Preferences
You can use the External preferences in the Practice Preferences window to do the following:
- Set up external system connectivity
 - Process no show appointments for third-party
 - Display the patient's status in the immunization registry
 - Enable real-time address validation in NextGen® Enterprise PM and Master Files in File Maintenance.
 - Access the United States Postal Service (USPS) website and register for a USPS user name or user ID and password.