You may want to know the total value of a feature, sprint or a client - not just the values of each element contributing to the value. In Panorama summing up numeric fields is done automatically for you.
The total value of numeric fields for all issues will appear (with a sum symbol) next to the highest hierarchy level and next to a directory. The only thing you have to do is to enable a column showing the values you want to see.
The screenshot below shows a panorama, in which one wants to see total story points in a Jira epic or directory.
A panorama with the story points column
Panorama also displayes aggregated information about date fields. The aggregated information will include timespan.