We are looking for a script similar to Running Total, except instead of adding the previous record to the one below it, etc it would add a Units Received field to a Total Received field everytime the Units Received field is updated.
One way would be to have a table called e.g. “deliveries” with “units received” field. It would be linked to products table which would use a Roll-up type field: Total Received. This field would use the SUM(Values) function.