Ok, thanks for sharing the documentation.
order_by:
field name to sort packages, you can sort by title, download_count, create_date, update_date or id , its a optional parameter, if you skip this parameter “id” will be taken as default.
order:
asc or desc, options parameter
Example:
[wpdm_category id="Category ID" title="Custom Title Here or 1" desc="Custom Dscription or 1" order_by="field name" order="asc or desc" item_per_page="10" template="temaplte name or ID"]