How to change domain NS (Name Servers)?

How to change domain NS (Name Servers)? 

For instructions how to modify DNS servers of domain please refer our KB article "Changing Name Servers of a Domain Name"

Note: 

1. Only "Name Servers" option in Domain Registration section used for delegate domain with any Name Servers:

2. "Manage DNS" option in "DNS Management" section used for change DNS-records (NOT Name Servers) only on regway Name Servers!

These settings have no effect on the operation of the domain if the domain is delegated with any other Name Servers except dns1.regway.com, dns2.regway.com, dns3.regway.com, dns4.regway.com.