Hello, I'm new at odoo. Reading "Odoo Development Essential, 4th Edition". However, I've installed Odoo 15 in AWS EC2 Instance. 

Followed the books steps to create To-Do app in odoo. But its not showing in menu and I can't use it. What have I don't wrong? 

• First created "To-Do Item" model and added some extra fields
• Created "To-do User" group and added "User Types/Internal User" in 'Inherited' Tab. Also give read/write/delete/create access to "To-do Item" Model in "Access Rights" Tab.
• Then added admin user to  "To-do User" group. 

Now as per the books, admin should be able to create To-do Items and all from menu. 

But this item isn't available in menu. What have I done wrongly?