AttachmentsioGates can handle different metadata types and you can find them under the Metadata menu. Any Metadata can be displayed on the sharing page and you can from the share menu control what of the Metadata you would like to display. You can search on Descirption - Meta Tags - Filename.
"Attachments" Display the attachments, like QC reports or other types of files you would like to keep together with the original files. There is no limit to how many and what types you can attached. Can also be seen under the original file and showed on the share links.