Backstage
Organize shelves and restock
Receipt of purchase invoice
Know the promotion information
Guide the customer to take the shopping cart
Leave the supermarket
Update out of stock information
remind customers to take their belongings
Whether out of stock
Customers arrived the supermarket
Employee Action (Face-to-face)
Goods are bagged or packed
Add any change
Pay though a register or self-service register
Find and select the products
Put back on the shelves items which customers have abandoned
Take a shopping cart
Returm a shopping cart
Collect shopping carts
Update price information
Invoicing for customers
Update promotional information
Provide shopping bags to help customers pack the goods
Frontstage
Place shopping cart
Customers Actions
Calculate and direct customer payment
