Good morning For some different customers, I am building an website on an test domains. The problem is that I can't use the full functionality (f.e. page layouts, section libraries, ...) of SPPB because the final URL is not registered.

Is there any possibility, that when I register 1 testdomain, and I put the testwebsites in subdomains, that I can use full functions for all subdomains?

Or can I register the subdomain in my account, and later replace it by the official domain?