Net Amount for Opportunity Totals (OETotalsBox)

SOLVED

Hello,

We're looking to try to add a field to the Opportunity Total box (derived from the Order) to show the Total Net Amount.

What would be the best way to add this, or change the 'Total Order Value' to be the 'Net' amount? Not sure if I've just missed an option or a view I can amend to include it.

TIA