Add new row on a repeating section with a button

have a look on this blogpost   written by

thanks for the answer, I've manged to find a way to update the second repeating table but now I'm a little bit stuck on how to iterate through the second table to check if an item is in the second repeating section.

what about something like this

NWF$('.repeater2 .nf-repeater-row:not(".nf-repeater-row-hidden") .req').each({...});‍‍