To upload an attachment, click on the button Drag files here or select from your computer that you find in the Route tab inside the quotation.
Alternatively, drag one or more files over it.
The uploaded attachments are immediately reported in a list in the Route tab, marked by the paper clip icon.
To make the attachment visible in the various documents of the quotation click on Make public.
In the same way, to hide an attachment, click on Remove public.