1. Log in NXT web view as a user with supervisor rights, go to the Notes and actions section of a constituent record and click on the gear icon to go into settings.
  2. Mark the Use Action Status codes option
  3. Select which statuses mean "Completed" from the list at the bottom
*Note* Only those user with Supervisor rights will have the ability to configure action statuses
User-added image

To learn more action statuses please visit our documentation.