Step 1: click on WholeSale tab on left menu then click add offer.
Step 2: Select products.
Step 3: Config discount:
Below is our demo config: Buy 2 get 5% OFF, Buy 5 get 1 free, Buy 10 get 2 free and free shipping.
As you can see, quantity level 10 has 3 rows, so that they will be merged to buy 10 get 2 free and free shipping.
To add more quantity level please click Add discount level at the bottom
Step 4: click Save offer button at the bottom of page.
If you want to customize text or color please view this instruction