617AD, the rest is
-d "<path>"at the end of the line beginning with
Subsystem sftp, e.g.:
Subsystem sftp /usr/libexec/sftp-server -d "/home/etc/www/Mysite/plugins"
<path>will act as the default SFTP directory on this server.
“I understand you're trying to milk every penny from your users, but please, for the love of god, make it a one-time purchase” — Anonymous