In the left pane, click Search & investigation , and then click Audit log search
Note: You have to first turn on audit logging before you can run an audit log search. If the Start recording user and admin activity link is displayed, click it to turn on auditing. If you don't see this link, auditing has already been turned on for your organization. It will take couple of hours before you are able to see log results in UI or via code.
In the screenshot below. I am creating a new admin role called “AuditReportRole”, assigning minimum required permissions “Audit Logs” and “View-Only Audit Logs” and granting a user “Garth Fort” permission to be able to access the Usage reports.
3. Use following powershell script, please make changes as per your environment and this will generate .csv file for each user with the actions they have undertaken for last 7 days.