This will limit the user to the specified number of uploaded or download kilobytes per session. File Transfer Protocol does not send information to the server regarding the number of bytes that a user will be sending.
A user will be able to start a transfer of virtually any size, however once the limit is reached, the server will refuse to transfer the rest of the file.
Start the Administrator Interface and connect to the Server.
Click the Server tab on the bottom left side of the Administrator Interface.
In the left window, click the user or User Setting Level you want to configure.
Click the Quota tab.
Select the Max Upload/Download Size check box and enter the maximum amount of data (in kilobytes) the user may transfer during a session.
Click Apply.
Setting maximum transfers per session
Setting maximum transfer speeds
Setting maximum connections per User