How to attach the static files with invoice?

Adding a “ Static Files” like terms & conditions, Refund Policy, etc is one of the premium features of Challan Invoice. In order to add a Static Files follow the steps below:

1. Go to the Challan Invoice > Settings from your WordPress Dashboard.
2. Click on the Static Files tab.
3. You can upload up to 3 Static Files with your invoice. Upload your file to add them with the Email. You can set your static files with a specific type of order. There are a lot of options to specify, for example, New Order, Cancelled Order, Completed Order, etc.