...
The main features of this reports view are Fields, Options, Format, and Export.
Fields option
It lets configure Reports Filters, Columns, Rows, and Values according to your Jira issues fields.
You can also add calculated values to Pivot table data.
On the Pivot table you can filter data by each selected Field. To do it click on gear near them.
Layout options
At the Layout options, you can set Subtotals and Grand totals.
Find more details in sections:
Layout options
Format option
Format
The format option allows configuring Cells Format, such as value, text-align, decimal places and etc.
...