Anybody know how to update the fields that appear in the items sublist on a sales order?

Customize Form (Sales Order) -> Sublist Fields

Bingo. That did it. Thanks, @Tim Chapman

one thing to note is that if you want the sublist field to capture data but don’t want to SEE it, tick the

SHOW

box but set the label to blank.

Ahh, good call. That’s probably the way to go in my case since we’re looking to pull a field in a script but it doesn’t need to be visible all the time.