D-Link DNS-320L User Manual page 98

Section 4 - Configuration
Enter the amount of disk space you wish to assign the user on each volume.
Enter zero to provide unlimited disk space to the user.
Click Next to continue.
The final step is a summary of the configuration for the new user. Click Finish
to accept the changes or click Exit to cancel the changes.
D-Link ShareCenter DNS-320L User Manual 92