How to have orderitem and shipping under each order in the admin panel?

how do I make it better for the website operator to process the order, can we have each orderitems and shipping addresses associated with the order to be under each "Order" in the admin panel? would really appreciate your help, thx!

models.py

class Order(models.Model):
    customer = models.ForeignKey(Customer, on_delete=models.SET_NULL, blank=True, null=True)
    date_ordered = models.DateTimeField(auto_now_add=True)
    complete = models.BooleanField(default=False)
    transaction_id = models.CharField(max_length=100, null=True)


class OrderItem(models.Model):
    product = models.ForeignKey(Product, on_delete=models.SET_NULL, blank=True, null=True)
    order = models.ForeignKey(Order, on_delete=models.SET_NULL, blank=True, null=True)
    quantity = models.IntegerField(default=0)
    date_added = models.DateTimeField(auto_now_add=True)

    status = models.CharField(max_length=40, choices=STATUS_CHOICES, default="Order Placed")
    tracking_no = models.CharField(max_length=300, null=True, blank=True)



class ShippingAddress(models.Model):
    customer = models.ForeignKey(Customer, on_delete=models.SET_NULL, blank=True, null=True)
    order = models.ForeignKey(Order, on_delete=models.SET_NULL, blank=True, null=True)
    address_one = models.CharField(max_length=200)
    city = models.CharField(max_length=200)
    country = models.CharField(max_length=300)
    zipcode = models.CharField(max_length=200)
    date_added = models.DateTimeField(auto_now_add=True)
      

admin.py

admin.site.register(Order, OrderAdmin)
admin.site.register(OrderItem, OrderItemAdmin)
admin.site.register(ShippingAddress, ShippingAddressAdmin)

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