Start from envelope Django template

core/admin.py

@@ -0,0 +1,36 @@
+from django.contrib import admin
+from django.contrib.auth.admin import UserAdmin
+
+from .forms import CustomUserCreationForm
+from .models import NotificationSettings, User
+
+
+# Register your models here.
+class CustomUserAdmin(UserAdmin):
+    # list_filter = ["plans"]
+    model = User
+    add_form = CustomUserCreationForm
+    fieldsets = (
+        *UserAdmin.fieldsets,
+        (
+            "Billing information",
+            {"fields": ("billing_provider_id", "customer_id", "stripe_id")},
+        ),
+        # (
+        #     "Payment information",
+        #     {
+        #         "fields": (
+        #             # "plans",
+        #             "last_payment",
+        #         )
+        #     },
+        # ),
+    )
+
+
+class NotificationSettingsAdmin(admin.ModelAdmin):
+    list_display = ("user", "ntfy_topic", "ntfy_url")
+
+
+admin.site.register(User, CustomUserAdmin)
+admin.site.register(NotificationSettings, NotificationSettingsAdmin)