If you want the save() method in the form and not in the formset, then you will need to create a form class with the method. Then add forms to the formset based on your class.

>You know, I made it.
>But not the way I want, because the methods should be in each form no in the formset, because for each form we could have diferent codes.
>The code whith it found was:
>thisformset.save()