How do I attach a file to a message as an instructor?
You can upload supplemental files as part of your Inbox messages.
Note: Attachments appear in your user files in the Conversation Attachments folder and count against the files limit for your account.
Select Multiple Files

You can upload additional files by clicking the Attachment icon [1].
If you accidentally select the wrong file, click the Delete icon to remove it [2], or click the Attachment icon, or double click the file to select a different file.
When you are finished, click the Send button [3].