How to give a cart level discount

To enable discounts, go to Settings > General > Allow cart-level discount. 

Here's how to give a discount on the cart level (over all the products):

Step 1
​Add the products to the cart 

Step 2
​Tap Discount above the Pay button. 

You'll see 3 discount options:

Step 3
​Once you've added your discount, you can apply it and proceed with the payment.