1. First set an sftp password with the command "sftppasswd" from the command line.
2. Then open Dreamweaver, click manage sites, select your site and hit edit, and go the the advanced tab.
3. On the side menu there, click "Remote info", then choose an access of "FTP" and then fill out FTP host is "hcs.harvard.edu", host directory is "~group_name_here/web/folder_name" and login and password are "group_name" and the sftppassword that you set earlier. Check the "use secure ftp" box.
4. Then, you can sync your website.