Hi Ed, You can try the following….
[wpdm_all_packages items_per_page="20" categories="cat slugs,cat slugs,cat slugs" jstable=1 order_by="field_name" order="ASC" cols="page_link,file_count,download_count|categories|update_date|download_link" colheads="Title|Categories|Update Date|Download::155px"]
Let me know if you need further help!