Cash back refunds & discounts happen automatically via the Group Shop app, as a merchant you set the discount and cash back rewards. Once a customer completes a purchase on your store, they receive a cash back refund offer on the thank you page with a link to their personalized Group Shop page. Customers are incentivized to share the page with 5 friends in exchange for cash back rewards. Friends get discounts when they shop & the customer who shared the page earns a cash back reward for each successful referral. Please contact us to see Group Shop in action.