To leave a comment on a video:
Right click on the canvas.
Select the Add comment option.
Input the comment you wish to add to the video.
If required you can also tag users in the comment and add reactions to your comments using the emoji button.
Click Post.
The comment is displayed on the scene using your account image. Hovering the image displays the comment and any tagged members will be displayed onscreen.
Notes:
Tagged users receives an email and an in-app notification regarding the comment.