When you are on the form-designer screen, you can copy the form to another board, by using new options that become available when you on the form-designer screen:
Then simpy scroll till you see the board you want to copy your form to, and select the specific step you wish to attach it to.
This will effectively create a LINKED-COPY of your form onto the second process board.
This means that if you modify the form on the 2nd process, it will also change the form on the first board. (it is linked)
If this is not what you want, let me know and I'll show you how to make independent copies of forms.