Select the Excel BOM Output
You can select the output format of the Excel BOM
You can either select .xls or .pdf and in both cases you needn't have Excel or a PDF printer defined on the workstation.
Note, though, that if the BOM model is not marked as hidden, at the end of the creation process the application will try to display the result and for this you will need to have at least a viewer installed. You can easily find free viewers for both file formats.