Hover over the section of the lesson plans that you want to leave a comment on. Select the speech bubble comment icon. A comment screen will automatically appear. Type your comment and then select the blue, "Add Comment: button to save your comment.
Once a comment is added to a card, the comment icon will turn blue. You can return to this icon at any time to view any saved comments.
Note: Your comment will not be saved unless you select the "Add Comment" button. Once your note is saved, you can delete the comment by selecting the trashcan icon at any time.