Navigate to the assignment within the course. Click on the assignment title.
Read the assignment instructions and click "Upload Submission button" when you are ready to proceed with the assignment.
If its text input, click the text input section, if its an upload, it defaults to that section and there are usually additional options on the "additional Options tab, such as adding from your google drive, dropbox or one drive.
*Note: Because network connections can break down, before you click "Save changes" and submit your assignment, consider selecting your text and copying it to your clipboard. If there is an error with the submission, you will still have a full copy of your assignment and can resubmit it after the network connection is re-established.
If it is a document be sure to title it and click the Select a file to upload button. Find the file on your computer and select continue.
Your assignment will be time-stamped with the date and time of submission.