In cwp you have two types of FTP users: system and virtual.

System users
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System users are linux users, you can login into to FTP by using access details of the control panel.
Linux users are created from cwp.admin left menu --> User Accounts

Virtual users
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Virtual users are users created with ftp software from cwp.user panel.
Virtual users have the same permissions like the main user of the account.

With Virtual users you get possibility to make unlimited number of FTP accounts for the same user account.

All users are chroot-ed into the home folder of the system user.