Populating a third table based on two other dymamic tables

Hi,

I have a form with two dynamic tables. They use a button on each table to add a row, etc.  I would like to create a third table that is automatically populated with the data from the other two tables, a kind of summary.  I would like summary table to be the last page of a multipage document that has a variety of expandable boxes, etc.

Any ideas?

Thank you for your assistance