The username on NILM follows your Windows Username. Go through the below steps to change your Windows username:
1. Go to
Start >>
Control Panel and select
User Accounts.

2. Click on
Manage User Account to modify user account information.

3. From the User’s List, double click on the user account currently used on the computer or select the user account and then click on
Properties.

4. You will be able to edit your username on the Properties tab. Click
Apply to apply the changes.
5. Log out from the Windows account and re-login to observe the new username change being reflected on NILM Username.