Where to start getting information?

I don’t think you are correct.

A student can submit their Profile forms at different times to each school.

So, they could submit to all schools requiring only student info in one submission.

Then in a separate submission, they could submit using grandparent information too.

if that isn’t true…but I think it is…the student could submit using their and the grandparent info…but the schools that do NOT require the grandparent info would just not use it.