You would need to use the X10Hosting nameservers.
https://x10hosting.com/wiki/Nameservers
for information about that see --> [ https://x10hosting.com/support/domains/add-domain-name ]
We already have a step-by-step guide at https://x10hosting.com/support/domains/add-domain-nameThey should give you simple step-by-step procedures on x10's web site, why does it have to be so confusing.
Hi,
We have an article comparing addon and parked domains, though from what you have stated, it sounds like a Parked Domain would be suitable. A Parked Domain essentially exacts the same as your main x10Hosting domain; it will display the same content with no redirection.
We already have a step-by-step guide at https://x10hosting.com/support/domains/add-domain-name
Thank you,