HitPay online store users can provide a % based discount, amount based discount or free shipping based on the total order checkout amount.
Navigate to Settings > Store > Shipping
Click on Add Shipping Discount
Add/ Select values and click on Save Changes
Note : One 1 shipping discount rule can be activated at a time. This shipping discount rule will apply for all shipping methods
The shipping amount will now be automatically reflected with the shipping discount at the checkout page as shown below