BUY 5 GET 1 FREE, or BUY 1 THE SECOND GET 50%

[JessicaV]

Hi,

I have a problem using the POS Shopify app. Please some one help me out. How I can apply automatic discount such a BUY 5 GET 1 FREE, or BUY 1 THE SECOND GET 50% on POS shopify app. 

Thanks