Before users can embed Power BI tiles in personal dashboards, the organization-wide setting must be enabled.
Enable Power BI tile embedding in the organization
Sign-in to Microsoft Dynamics CRM as a user with the system administrator security role.
Go to Settings > Administration > System Settings.
On the Reporting tab in the Allow Power BI tile embedding option, select Yes to enable or No to disable.
Click OK.
Follow these steps to add one or more Power BI tiles to your dashboard. To use the Power BI service, you must have registered and enabled your Microsoft Dynamics CRM Online instance as a data source within Power BI,
Sign in to Microsoft Dynamics CRM, and go to Sales > Dashboards.
Click New.
From the new dashboard, click Power BI Tile on the toolbar.
In the Add Component dialog select the Power BI dashboard and Power BI tile that you want to display in your dashboard, and then clickOK.
Click another area of the dashboard and repeat this step to add more Power BI tiles to your dashboard.
Click Save to save your dashboard.
Source : Technet Microsoft