The Question and Answer section for Schindler’s List is a great resource to ask questions, find answers, and discuss the novel.
At what point in the movie are you referring to?
I saw the film so long ago. I, however, found a few scenes that will help you.
The Jews living in the countryside were ordered to the major cities, including Krakow, by the Germans. They were forced to relocate and register their families by the Nazi regime.