i will really appreciate it if you elaborate a little more, and what should i do if i want to avoid the creation of the admin user for a specific sub-server e.g admin user
Just accept that you need ServerAlias or do some research - I am not google.
Also, don’t piggy back issue together. You already have a thread about the admin user with a couple of very helpful and clear explanations.
If you choose to ignore their help it’s not fair to then ask other people the same question just because you seem to want a different answer other than the correct one.