When creating a location there is an area for you to set the locations cancellation and DNA charges. As shown in this article (how to add a location) we can see that the location screen is split into two sections.

The second section is shown in the image below. It is within this section that you set the locations DNA and cancellation charges. It automatically defaults to the DNA/Cancellation that are set in your stock item list however you can change this by clicking on the drop down arrow.

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