You can change the username and allow the other user to take over the existing user account. After the username is changed, the new name will be reflected to the following.
Following will be reflected with the new username
- Username displayed on MiiTel Phone screen
- Username displayed in the aggregation results of the user
- Username in call history and call history list page
- Username entered in CSV file created in storage (New username will not be reflected to the CSV file that was created before the change)