I want to put some subdomain.mydomain.com in another server
i understand in current server, in WHM > Edit DNS Zone > mydomain.com > i just need to add A record like
subdomain A 18.104.22.168(another server IP)
before that, i need to set the another server first, so i want to order a reseller hosting for the another server.
My question is what domain i need to put in the order form? Is it ok still put mydomain.com?
Because i tried put subdomain.mydomain.com but its says not valid domain. Its standart hosting order form, using WHMCS
and what nameserver i need to use in the another server WHM later > Basic cPanel & WHM Setup > Nameservers, is it still ns1.mydomain.com and ns2.mydomain.com like current server use? Where i need to create the nameserver for the another server?
please help, this should be easy if you have done it before