I have two domain and i want to park them in the same content(Hosting)
I presume you mean domain aliasing? That would have to be done with your web host - it is not currently a feature offered by Cloudflare.
i have first domain linked with my hosting and now i want to replace or change this first domain to my new domain
You can go to your cpanel hosting, then click in domain manager section, in this feature you can add more domain (if your hosting can be do it, because it base on your plan of hosting provider allow).
If your hosting only can add one domain, here is 2 way to help you:
- upgrade your hosting to another higher plan.
- remove exits domain, then add new domain.
Every hosting is different which is why, if it is not Cloudflare related, I suggest contacting the host for assistance.
Not all hosting has cPanel and even those who do are often different.