Custom COA's additional information on Senaite Impress

Hi

I was able to create a custom COA for my lab by working with the current templates and copying and pasting, however we require the GPS coordinates to be displayed on the report. The GPS coordinates are already captured in the sample point but I am not sure how to get that information to the COA. Is there a spesific function that calls this? Where do I find the current functions? How do I add it to the COA?