Which discount method is better?

1. What is Point-of-sale (POS) 04:25 2. How to select menu items? 04:13 3. What is Inhouse Guest Ledger account? 02:16 4. How can I add item wise discount? 02:03 5. How can I add fixed amount discount on total bill amount? 01:43 7. Tax on discounted price or full price? 01:37 8. How to print KOTs for running order? 02:25 9. Which three reports are important? 04:04 10. How to give tax discount for credit card customer? 02:22 11. Can I pay a bill with both cash and credit card? 01:39 12. What is Receipts Report? 00:59 13. How can I see all invoices with items and payment detail? 00:59 14. How can I post OFF / ENT bills 04:01 15. How can I charge employees for food? 01:18 16. Can a guest do credit and pay later? 00:56 17. Can I see changes done in invoice? 01:41 18. How can I post banquet advance and then settle it? 05:43 19. How to add or remove tax? 01:58 20. How to re-checkin a guest? 02:30 21. How to deactivate a food item? 01:11