If you wish to request multiple files from your clients and partners a good way to do it is by adding multiple file drop zones, one for each file you need.
With this feature, you can add more than one drop zone area to your page. Each upload zone has its name and description to help your customers better understand the files that need to be uploaded.
Select “Page settings“ from your dashboard.
Under the tab "Forms" you can add one or more File Upload Fields to your page.