How to correctly design a select form element from a large table in a large form?

Question

JavaScript

There is an admin panel for the catalog of films. Let's say you need to fill in the movie card manually. For the case of filling in movie genres, an array of text fields is created (dynamically adding fields) with a simple autocomplete screwed in from a small table of unique genres. Problems when adding a person (actor, director...) to the movie card. How is it easier and more correct to organize this process in the case when manual editing or adding persons is necessary?