Click on the Column Formatting menu in the main navigation bar of the page
Select the field you wish to apply a total to in the Report Fields list panel on the left of the menu
Open the Summary section of the menu to view the available options
Define the Total Aggregation option.
You will notice that using the Column Formatting menu rather than the Field Drop Down list means that you have a range of additional options, rather than just the ability to select the aggregation to use. These will be explored below.
You should now have a total on your field.
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Display Labels
Click on the Column Formatting menu in the main navigation bar of the page Image Added
Select the field you wish to apply labels to in the Report Fields list panel on the left of the menu
Open the Summary section of the menu to view the available options
Set Display Labelsto On Image Added
You should now have a label on your total. The label will reflect the aggregation used for the total and cannot be customised. Image Added