Please don’t hijack other peoples posts, particularly when your question is not related to that post.
If you’re new domain is a custom domain, you can add it as a parked\alias domain ontop of your current one. otherwise if you’re using a new free domain, add the domain to your account, and follow this guide to move it:
Then you can set up a redirect from the old domain by going into the “Advanced > Redirects” settings in your client area:
