Series Group Properties Dialog Box, Sorting
Select Sorting on the Series Group Properties dialog box to specify a sort order for all series in this group.
Click to add a new sort clause to the list.
Click to delete a selected sort clause.
Click to move the selected sort clause up in the list.
Click to move the selected sort clause down in the list.
Sort by column
Select the field on which you want to sort, or enter an expression to specify the sort order.
Sort by order
Select A to Z to sort from the lowest to highest. Select Z to A to sort from the highest to the lowest.