This guide is intended to explain how to find the used quota on Google Drive for Work, using the Admin's console. 

1. Go to the Google Drive for Work Admin's console:

2. Type your Admin's username and password:


3. Click on "Users" and then at the right top corner click on "Select columns":


4. Select the preferred columns and click on apply:


5. You will see the usage of each service:


6. Please sum all the storage usage and you will know how much quota is currently in use.