NSM On-Prem - How to change username of default admin

We can change the username of default admin for NSM On-Prem. Here are the steps:

1. log into NSM On-Prem with default admin account. Go to User Management/Users/, click on three dots under "Action", click on "Edit":

2. change the username:

3. a popup comes up with warning:

4. click on "OK" and "Save". Now username of default admin has been changed:

We can log out and log back in with new username.