Administrators have access to monitor storage and bandwidth usage through the Administration control panel.
To see current storage and bandwidth usage:
Choose Administration from the upper right drop down
Select Account icon on top navigation bar
From here, you will be able to view your Plan Limits, Storage, Users, Project Totals, and SafeStream minutes used. The users tallied here are not a record of all users, but just the active ones (disabled/locked users do not count towards your package limits). Storage is also not a live calculation, but calculated nightly for billing purposes.
An alternative way to view this is in the dropdown of username in the upper-right corner of the account. Project thumbnails provide a real-time update on storage, users, and project file totals.