Make checkbox columns in tables mandatory input in APG Dialogs

Hi,

on of our customers is making extensive use of APG dialogs in order to have his employees do all kinds of attestations.

So we present the user a table with various information in an APG dialog, each table will contain one or more checkbox columns where the user has to indicate his acceptance or rejection of the information represented in each row. Finally the user should only be able to click the submit button when he has checked one of these boxes in every row.

An alternative could be a dropdown box instead of a multiple check boxes, then the user must select one entry from the dropdown for every row.