Add admin for NotificationUserSetting

InvenTree/plugin/admin.py

@@ -70,4 +70,19 @@ class PluginConfigAdmin(admin.ModelAdmin):
     inlines = [PluginSettingInline, ]
 
 
+class NotificationUserSettingAdmin(admin.ModelAdmin):
+    """
+    Admin class for NotificationUserSetting
+    """
+
+    model = models.NotificationUserSetting
+
+    read_only_fields = [
+        'key',
+    ]
+
+    def has_add_permission(self, request):
+        return False
+
 admin.site.register(models.PluginConfig, PluginConfigAdmin)
+admin.site.register(models.NotificationUserSetting, NotificationUserSettingAdmin)