I really need an answer to this question too. My website designer is almost finished and does not know how to proceed. Support responded as follows;
“There isn’t an out of the box way to do this within Ninja Forms. This may be able to accomplished with custom code, Unfortunately we aren’t able to provide or support custom code at this time. You may be able to connect with one of our Collaborating Developers, to see if they are able to provide you with a custom solution.
I apologize that I don’t have a better answer for you.”
I’ve contacted one of their developers yesterday & another today and I’m waiting for a response. I am in Australia so I understand there may be a delay with the response due to the time difference.
Any help would be much appreciated.
Thanks