I looked around but did not see this. If this is not possible now can it be in the future?
In this example we're creating the additional FTP user "BamaStangGuy" for whippmedia.com : Code (Text): pure-pw useradd BamaStangGuy -u nginx -g nginx -d /home/nginx/domains/whippmedia.com pure-pw mkdb Change to suit your needs.
yup it's possible as @Jon Snow stated and is outlined on page at Pure-FTPD Virtual FTP Users - CentminMod.com LEMP Nginx web stack for CentOS under re-creating user for pure-ftpd virtual ftp user