You can change the FTP password for an FTP account from your cPanel > FTP Accounts > Change Password (next to the account whose password you with to change).
Changing FTP password
The FTP service does not support creation of symbolic links.The only way you can create a...Using FTP client
Instructions for using FTP clients vary, depending on which client you wish to use. We recommend...Secure FTP connection
If you need a secure FTP connection over SSL, you should use the FTPES protocol (FTP over...How to upload files for an add-on domain
You have to upload the files for an addon domain to its webroot directory. When creating a...Changing file and folder permissions
Most FTP clients provide the option to change file / folder permissions, a.k.a. attributes....