title: I want to display another model in the home admin site page django
body: <p>In the admin site I display custom users, I mean in admin.py I wrote</p>
  <pre><code>from .models import User, Product, Address
  from django.contrib import admin
  from .forms import CustomUserCreationForm
  from django.contrib.auth.admin import UserAdmin
  
  class CustomUserAdmin(UserAdmin):
      model = User
      add_form = CustomUserCreationForm
      fieldsets =  (
          *UserAdmin.fieldsets,
          (
              'Additional fields:',
              {
                  'fields': (
                      'phone_number',
                      'billing_address',
                      'shipping_address',
                  )
              }
          )
      )
  
  admin.site.register(User, CustomUserAdmin)
  </code></pre>
  <p>User is my model that inherits from AbstractUser, I want to display another model too which is called Product. How to do that?
  Here it is the second model</p>
  <pre><code>class Product(models.Model):
      name = models.CharField(max_length=50)
      SKU = models.CharField(max_length=50)
      description = models.CharField(max_length=300)
      price =MoneyField(max_digits=19,decimal_places=4,default_currency='USD')
  
  class ProductImage(models.Model):
      product = models.ForeignKey(Product, related_name='images', 
                                   on_delete=models.RESTRICT,null=True)
      image = models.ImageField()
  </code></pre>