Files
A Files column stores file attachments per row — for example documents, images, or other uploads. Users can add, view, and download files in each cell. There are no special settings for this type; you only set the column Name and optionally Private.
New column form
When you add a Files column, you configure it in the New column modal.

Name
The Name of the column — this is the label shown in the table header. For example: "Documents", "Attachments", "Files".
Private
When Private is on, the column is visible and editable only for selected users and groups. You define who can view and edit the column. Other users will not see or edit this column.
Column types: Overview · Text · Number · Status · Timespan · Date · People · List · Project list · Files · Owner · Checkbox · ID