Enable Drilldown on 'Web Protection Statistics' page
When you click on the Web Protection section, it brings you to Web Protection Statistics - Today. If you click the arrow in the top right of any of the panes, it brings you to the Bandwidth Usage tab of Logging & Reporting -> Network Usage, but it does not set the top left drop down to the any report. We still have to click into that dropdown and select the appropriate report. I raised a support ticket about this on OS 9.510-5 and I was told this was how it is supposed to function and to make a request.