If you have a typical lab report for biosolids, where the nutrient content is reported on a dry weight basis, this will not be difficult.
You may get an analysis for an organic amendment that does not report the nutrient content in the same “% of dry matter” or “% of solids” units required in the SnapPlus Biosolid analysis entry. You will need to convert the results to these units using the reported solids content.
Instructions for converting various types of lab reports can be found here: https://snapplus.webhosting.cals.wisc.edu/wp-content/uploads/sites/80/2018/11/Converting-Analysis-of-Organic-By-Products-to-N-P2O5-K2O-Rates.pdf