How to ... One button copies RADIO button group result to another RADIO button group

Hi everybody.

I have a hot question for this theme.

So what I want to do is:

1 button that copies all the selections and values in the first "Lot" to the second "Lot".

So far I manage to create that button, and I can copy a text field using ( this.getField("landing designation - lot 2").value = this.getField("landing designation - lot 1").value; )  but when it comes to Radio buttons or checkboxes groups things are not that ease.

I´m a very basic user without an extensive knowledge about JavaScript.

So I´ll appreciate any help you guys be willing to give.

Again thank´s for your time.