how to get backup-archive client to erase

[MC Matt Cooper (2838)]

Hello,
    I am researching the use of the ARCHIVE function.  I am looking at page
259 of the TSM for MVS and OS/290 Administrator's Guide.  It says, 'When a
users archive files, they can choose to have the backup-archive client erase
the original files from their workstation after the client archives the
files.'   After that I can not find out the details of how to make this
happen 'automatically'.
Has anybody done this or found the option to make it happen?
Matt