On most charts you can group by:
- None - no grouping, just totals
- Day - chart will be grouped by day
- Week - chart will be grouped by week
- Month - chart will be grouped by month
So if you want to see top Applications for a year grouped by months, select a year in date range part at the top, then select Group by -> Month
Currently there are two charts available, line chart and bar chart. Click on the icons to toggle between them.