To create your own nameservers such as your ns1.yourdomain.com / ns2.yourdomain.com, you will need to purchase the nameserver addon, It a onetime payment of $15USD.
There is a 2 way process to have your own nameserver with us
1- First you will need to register the ns1 and ns2 with the ips we will provide you at your domain registrant (where you bought the domain from)
2- One the ns1 and ns2 was set to point to the ip provided by us, its now safe to change your nameservers to ns1.yourdomain.com and ns2.yourdomain.com instead of our default nameservers
ns1.solidseovps.com and ns2.solidseovps.com