The BLS Spreadsheet (v6 2019) can be used for all habitats, including churchyards. This spreadsheet is designed to be used in Excel and it is available in two formats, you are advised to use the .xlsx format unless your version of Excel is too old to handle it. There may be problems using it OpenOffice or other emulators but we have done our best to avoid these.
The Guidelines document includes help on using the spreadsheet and our substrate and scale habitat codes, and the handout from the training session run at Cober Hill in March 2019 may also be useful.