Django Advance Foreignkey Relationship

I have a Django model which has relationship with user model. Where user are assigned to groups. especially “Admin”, “Teacher”,”Student”. So I want to make a foreign key relationship in such a way that it will show only The users that have been assigned to Teacher groups for Teacher_details model, And Similar for Student_Details Model. I have made the models Teacher_Details , Student_Details and established foreign key relation with User model. But the problem is that its showing all the user when I am filling Student_Details or Teacher_Details. Hope you got my problem. I am hoping positive response.

The code looks like this:

    class Student_Details(models.Model):
        user = models.OneToOneField(User,on_delete=models.CASCADE)
        image = models.ImageField(default='none', upload_to='img/')
        details_updated = models.DateTimeField(auto_now_add=True)
        address = models.CharField(max_length=150)
        admission_date = models.DateField()
        previous_college = models.CharField(max_length=150)
        course_enrolled = models.ForeignKey(ModelUniversity,on_delete=models.CASCADE)
        semester = models.CharField(max_length=20,choices=semester,default=None)
            
        def __str__(self):
            return self.user.first_name
    class Teacher_Details(models.Model):
        address = models.CharField(max_length=150)
        image = models.ImageField(default='none', upload_to='img/')
        details_updated = models.DateTimeField(auto_now_add=True)
        subject_taught = models.ManyToManyField(to='Student.stu_subject')
        user = models.OneToOneField(User,on_delete=models.CASCADE)
            
        def __str__(self):
            return self.user.first_name
    
        def subject_teacher_teaches(self):
            return [str(s) for s in self.subject_taught.all()]