1. Login to your BigRock account.
2. Select the domain name to be updated.
To see the particular domain click Manage Orders and select List/Search Orders from drop down menu. It will show the domain list present in the particular bigrock account. Click on the desired domain name for which you want to change name servers.
3. Change name servers.
4. Click Name Servers to open the name servers pop up. The pop up box contains Bigrock’s default name servers.
This is where you put Newsys’s name servers ie.
Name Server 1: ns1.newsyshosting.com
Name Server 2: ns2.newsyshosting.com
Then Click on Update Name Servers button.