...
To submit an assignment to a Blackboard drop box, navigate to your assessment dropbox, (this is usually in the assessment and feedback section in your module), locate the folder that your Blackboard drop box is in and then click on the name of the actual drop box (with the list icon beside it).
When this opens you will be prompted to View Instructions, click on the View Instructions button. If you have more than one attempt, it may appear as a Start attempt button.
You will then see the assignment content, click in the submission box to reveal the tool bar to attach your assignment (using the paperclip icon) or drag and drop your submission into the submission box. You can upload multiple files to the Blackboard assignment drop box.
You can also upload Panopto videos and other media, if instructed by your lecturer.
Once your assignment is attached, you will be prompted to rename your assignment display name if you wish, Save and then Submit.
...