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Similarly to the Option Total line in the Costing Screen, the One Total line combines all of the invoicing lines that are set to be combined into a single total on the final invoice.
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If the Invoice is linked to a Cost Option, go the Costing screen.
Move lines above or below the pink line as explained here.
Returning to the Invoicing screen, we can see that these changes have now been applied to the “O” (One Total) line on the Invoicing screen.
If the invoice is not linked to a Cost Option, you can edit the “O” column of individual lines on the Invoicing screen directly. Any line that should be including in the One Total line should have a “Y” in the “O” column.