To update your Power BI reports to show metrics in 15 or 30 minute increments, complete the following steps:

1. In the Support Analytics content pack, navigate to the ‘Incoming Volume (secondary)’ report.

2. Click on the visual ‘by hour of day’ to select it.

3. Click the ‘Edit report’ button in the top-left, and update the axis from ‘created hour of day’ to another field in Power BI called ‘created date and half hour’.

Don’t forget to save the report by clicking ‘Save’ in the top-right.