cPanel & WHM allows you to set the server's "profile." Server profiles let you set up the sever to only perform specific tasks or functions. This sets up certain roles for your server, and will enable or disable specific services. For example, the Mail server profile disables most non-mail services. This server hosts accounts that only need mail features and not other services.
To change your server's profile, you can go to WHM's Home »Server Configuration »Server Profile.
For further information about the different profiles, you can review our documentation on this, here: