Master Table: Totals TableHas summary Fields for Total Lines, and Calculates OTD through a formula field
Details Table: DeliveriesHas date fields, and and date 1 day in the past is "Late".
So what I have to do, is associate each record in the deliveries table by opening/editing the record, by adding the record number of the associated record in the totals table. I was trying to figure out a way to accomplish this through Automations or Form rules, but nothing seems to be working.