How do I post a comment?
You can add a comment on any task or task group. By default, the comment will be shared with everyone involved on the project, but if you're a team member you can create a comment that's shared only with your team (and not your client(s).)
Comments can have attachments, and attachments can be dragged or uploaded to a comment by clicking the blue link below the comment text field. A comment can also send a task to review or mark it as blocked.