class Registration(models.Model):
person = models.ForeignKey(User, edit_inline=models.STACKED, num_in_admin=3)
event = models.ForeignKey(Event, core=True)
class Registration(models.Model):
person = models.ForeignKey(User, edit_inline=models.STACKED, num_in_admin=3)
event = models.ForeignKey(Event, core=True)