Follow the below steps to enable Organization Insights preview feature in Dynamics CRM 365.
Step 1: Open Dynamics 365 CRM Online. Go to Settings -> Administration -> System Settings -> Previews.
Step 2: Select I have read and agree to the license terms.
Step 3: Select Organization Insights Preview (Enable Organization Insights Preview) as Yes and click on OK.
Step 4: Refresh the CRM Online Organization. Go to Dashboards and Click on the Organization Insights Dashboard.
Step 5: Below Dashboard will be displayed with different types of charts related to the Organization.
Hope you have learned a new feature today :):):)
Srinath Pega 