This article explains how to manage the timesheet Reporting settings.
Go to the Admin pages > Time Plan > Reporting.
Add a link to a Power BI report directly into the timesheet. Paste the URL to the desired Power BI report into the Power BI Report URL field.
If a Power BI URL is pasted in this field, the report will be available from the timesheets. A Dashboards button will become available in the timesheets. Clicking on the Dashboards button will open the Power BI report directly from the timesheet interface.