Summary row on tables

[ScottR]

This post is for columns:

Sum of Custom Columns Using ColumnMapping

This may be a rather simple question, but is there an easy way to the sum of a custom column using ColumnMapping. I've gotten close with actually pulling one of the cell's values across to the number input field, but I can't seem to identify and sum the remaining column's cells. Any help would be greatly appreciated. [Screenshot 2023-04-27 at 9.54.11 pm]

But it depends on how you are building the data. You might have to append a row to the initial data being used as the data source for the table.