I do not know if I'm doing it right because it's not working, I created a subdomain in vestaCP as follows.
I went to the DNS of my domain and added a CNAME record meusubdominio then I went to web in the panel and created the subdomain meusubdominio.meudominio.com.br putting IP that points to my site.
According to all the tutorials I followed is the correct form. But in practice it is not working, it even creates the folder on the server for that subdomain but it is not working.