Go to the .my Domain Registry Domain modification page:
http://web.domainregistry.my:7002/Mynic-ViewController-context-root/faces/PB/UserLogin.jsp
Enter Domain name, select Domain extention and click modify
Select login as "Technical Contact", enter Technical user ID, password and click "Login"
After login, click "Option 2" (Change Primary and/or Secondary Nameservers)
Go to Item 2 (Modify Nameservers Function)
Enter name server Contact Code - to assign your Domain with new name server
Click "Create" - to create new name server
To delete name server only work if you have more than 2 name server assigned to your Domain
Reconfirm your change by whois your domain at:
http://whois.domainregistry.my