Katie Emory: This will work exactly like the current line items table, but now all the rows can also be used as a child table.

BustBrain Labs It would be great if you could pull in child items from a look up field of the parent linked items. To elaborate, I'm picturing creating an output like the Airtable List view. I would use this for generating Invoices where the "Level 1" list would be the Purchase Order and the "Level 2" list of child rows would be the items in that purchase