Hi,
Thanks for contacting us here about this extension.
is it possible to import and edit inline an Excel file?
You can import an excel file from PC or your server then you can edit in WP Table manager.
Please go here for more information:
https://www.joomunited.com/wordpress-documentation/wp-table-manager/263-wp-table-manager-excel-google-sheets-and-onedrive-sync#toc-1-import-excel-files How is concurrent access to the file managed?
In WP Table manager plugin, you can import excel files from WP File download plugin
but tables are not generated to excel files so they can not be seen in WP File download.
Hope it helps!
Kind regards,