See this forum post on downloading multiple files.
Or you can use the custom Java mentioned by Erwin. Or show a listview with the entities you want to download, just create a microflow button per entity (list item) that downloads the file.
I hope this helps.
i want to download the uploaded files not the created ones i know two choices first by file manager widget and it save just one file no matter how much widgets i put in the page second choice that the drop zone widget that only uploads files and by the next user (work flow) it becomes empty i mean no downloading choice available i hope i described it well