The module provide few command line to set user and group quota and to upgrade the kernel state. Command line all start with:
linuxconf --modulemain diskquotaconf
--setuquota user --device device [ options ]
--setgquota group --device device [ options ]
--updatequota
--help
The --updatequota command will set the various limits for all users and groups on all file system, solving the inheritance for each user (group). This is generally used when you do a manual change to /etc/quota.conf and you want to make it effective in the kernel. Or it may be used when a quota.user (group) file is re-created.