Hi there! Cat here from the Front support team 

The Overview report can be modified to show various metrics. The following guide gives you more details on the metrics available within this report: https://help.front.com/en/articles/2156

To modify a report to show different metrics, you’ll need to click the gear icon associated with a chart/table which will activate a selector so that you can change the metrics displayed. The following guide has more details on this: https://help.front.com/en/articles/2115#report_sections

Cheers,
Cat