Using C++/WinRT on Windows Server 2016

Question

I am working on a new COM+ plugin for use on Windows. We are trying to use C++/WinRT because of being orders of magnitude cleaner and easier to use than ATL and C APIs. The problem is that since we are not using the runtime broker to expose the DLL methods we need to supply a DllMain, DllCanUnloadNow DllGetClassObject, DllRegisterServer, and DllUnregisterServer. The MS documentation at https://learn.microsoft.com/en-us/windows/uwp/cpp-and-winrt-apis/author-coclasses on the subject, but they do not cover what needs to be done with DllRegisterServer and DllUnregisterServer. Are these the same implementations as a normal COM DLL where you just set the registry values? I am very naive when it comes to actually implementing COM plugins, so I am not familiar with how these methods are implemented usually.