For each FTP site, you will probably want to create several different User Setting Levels before you create users. This allows you to control the server’s resources while still giving your users the flexibility they need to transfer essential files.
Start the Administrator Interface and connect to the server.
Click the Server tab on the bottom left side of the Administrator Interface.
On the menu bar, choose Configuration > Create New User Setting Level. The Create New User Setting Level dialog box appears.
In the Site drop-down list, choose a site.
In the User Setting Level box, type a name for the setting level.
In the Description box, type a description for the User Setting Level. This step is not mandatory.
Click OK.