In this video Creating a meeting app you can see at 2.24 . he copying some "tools,and doctypes like ToDo from app/frappe/frappe/config/desk.py . and paste it into his custom app meeting/meeting/config/tools.py , but in my case there is nothing inside the config file in frappe/frappe/config.
Now my doubt is, is that all files are default. or i want to create it manually.
and also i want to know can i copy whatever doctypes i want from other app like frappe and erpnext to my custom app?