Rewards settings can be found in Settings->Business Settings->System Settings-> Then click the "Rewards Program" tab.
Reward Settings Overview
Reward Point to Dollar Value: The number of reward points each dollar of spending creates. If set to 1 every dollar of a payment correlates to 1 reward point.
Reward Points-Reward Conversion Value: The dollar value of each reward point when a reward is redeemed. If the value is 0.1, redeeming 100 reward points will create a $10 reward credit.
Reward Conversion Amount: This setting defines the required number of reward points for a reward to be created. This is checked directly after a payment is made, and after reward points has been added for that payment.
Redeem Rewards Automatically: Enable to make the reward redeem itself automatically upon conversion. This will make the system send a notification email rather than the redeem request email. Below are some requirement settings that can be toggled for the reward to automatically redeem
Name
Phone
Address
Credit Card