How to generate Licenses Report?
Perform the following steps to generate a License Report:
Select Exchange Online Reports from the available vertical tabs. Then from left side of the application, select Licenses.
For demonstration purpose, "Organization" report has been chosen.
On selecting "Organization" report, a window is displayed as shown below:

Columns to be displayed on the Grid can be selected from the dropdown. By default, all columns are displayed.
After selecting the desired column from the dropdown, Click Refresh button.
Follow the above mentioned steps to run the other License reports