How to write CreateView for two related models?

Question

Django

I have two models Query and Files (for multiple file uploads). How should I write CreateView for Query so that the field for multiple file uploads is also displayed in the form!?

class Query(models.Model):
user = models.ForeignKey(User, on_delete=models.CASCADE, default=0)
date_of_creation = models.DateTimeField(default=timezone.now)
query_text = models.TextField()

class Files(models. Model):
file = models.FileField(upload_to='files', blank=True, null=True, verbose_name="File")
files = models.ForeignKey(Query, blank=True, null=True, on_delete=models.CASCADE )

class Meta:
verbose_name = "Files"
verbose_name_plural = "Files"