How to give additional discounts?
After the invoice is generated you can go to settings and select additional discounts
You will be brought to an additional discount page and the first thing you will see is a list of Additional Discounts that have been created. To Create a new Discount or Coupon Code you can say click on “Add Additional Discount”
Now you have to fill up the fields and decide whether this discount should Flat discount and should this be displayed in the final invoice or not.
Once the above steps are done, then you have to go to an unpaid invoice and click on edit, then you can view the drop-down of an additional discount as shown below and then click on update.