I've been trying to set up download relocation.

According to the FAQ:

You'll need to edit the line that says this:

define('DIR_FS_DOWNLOAD', DIR_FS_CATALOG . 'download/');

to look something like this:

define('DIR_FS_DOWNLOAD', '/home/my_user_name/download/');

Specifically, you need to indicate the exact complete path for the webserver's filesystem that points to your download folder. You could use your DIR_FS_CATALOG entry in your configure.php file as a reference, and make appropriate adjustments. Your FTP program and/or your webserver's hosting control panel should be able to help you understand the complete path.
My question is, since DIR_FS_DOWNLOAD is already defined as the path to zencart within the web section of the server, and we want to link above that, is the above code prepending the zencart path to /home/my_user_name/download?

Thanks.