Downloading User Usage Report
Select the
icon next to your name at the top.
Select Settings > Dashboard > Reports.
The Reports screen is displayed.Select Download adjacent to User Usage.
The report is downloaded as a .csv file into the Downloads folder, as per your browser settings.
The User Usage report contains report contains the name of the users, 21 day moving average of the space consumed by each user, trash space consumed by each user and number of documents for each user.