From the Time Utilization report we will know which periods are busy. To display the time utilization report, click on the Time Utilization area in the Reports page.
The height of the bar which uses the scale at the left axis, shows the total monthly hours. The blue points which uses the scale at the left axis, shows show the total daily hours. In the figure below, there are two points within the month of March.
Hovering over a point within March, shows that one or more sessions happened on March 15 summing up to 3.00 hours.
Hovering over another point within March, shows that one or more sessions happened on March 28 summing up to 2 hours.
Hovering over the bar within March, shows that the total number of hours of all sessions for month March sums up to 5 hours, which is indeed 2 hours + 3 hours.