Customisation and features on Codecanyon Project

Hello i got a codecanyon project which is “Yii Php framework “ and vue.js
Codecanyon project link here for inspiration ;
Codecanyon: https://codecanyon.net/item/karenderia-multiple-restaurant-system/9118694
I want to add features below (as add-ons)
Features List :
1- Ubereats, Deliveroo, Justeat orders integration (Api)
2- Cash Drawer and Thermal Printer integration
3-Barcode Scanner integration
4-Kitchen order management screen ( design will be provided ) :
5- Order Taking Tab (inside store )
6- Self Ordering Tab (inside store )
Whole Design : https://codecanyon.net/item/6-in-1-mutli-restaurant-food-ordering-app-food-delivery-app-android-ios-app-template-hungerz/29520494