Checklist
The System Web Server does not use ports 80 nor 443.
The Web Center does not use ports 80 nor 443.
The Configuration shared folder has been created.
You have a method (SMB, AFP, NFS, or SSH), that enables you to create or modify files in the Configuration folder.
You have a method to add DNS aliases (CNAME), or will be installing Pi-hole to administer CNAMEs.
You have selected a domain/subdomain to use for the local network.