How to allow Anonymous users to create a new directory and write to that directory?

We need to edit the parameter ‘anon_mkdir_write_enable’ and set it’s value to ‘YES’. But in order to make the parameter working, ‘write_enable’ must be activated. The default is NO.

# Uncomment this to enable any form of FTP write command.
write_enable=YES

# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
anon_mkdir_write_enable=YES