In order to run statistics for all calls going through a call queue, under the “Call Center” tab, select reports.
Once you’re there, you should be able to filter by time, date & type. Over to the right, if you select the “wheel/settings” icon, you can see where to select what shows up in the reports or graph.
As you make changed the report will run based on what you select. On the top right, you can download the report after it has finished loading.