Configure Discount Product
Open PoS app > Products > Products > find “DISC” product:
Pay attention to the Product Type: it should be “Service”.
At the Sales tab: it should be available in PoS and have a PoS Product Category and Course.
Then we need to add Global Discount product into PoS session settings and input the default value:
Add Global Discount to an order
Click at the 'Discount" button inside of the order:

The popup will appear, keep the default value of discount or change it:

Check the discount in the order:

Check the discount at the bill:

Procced payment.
Check the discound in backend
Check the discount at the backend (available only for manager’s access):
manager can open PoS app > Orders > Orders.
Find the Order at the list and open the form view, the discount will be shown inside of the order: