Comments
Comments let you discuss a Task with your team without changing the Task itself. You will find them in the activity section of the single Task view, where they appear in the same timeline as the Task’s history.
Writing a comment
Add a comment to any Task to talk it over with the other members of the List. Anyone who can open the List can comment – Owners, Members, and Guests alike. For a Guest this is the heart of the role: they cannot manage Tasks, but the conversation is fully open to them (see "Sharing & members" under Collaboration).
Comments use the same Markdown editor as Task descriptions, so you can format your message with headings, lists, links, and code. What you write is safely rendered, so formatting is applied without letting comments run scripts or unsafe markup.
Once posted, a comment joins the Task’s activity stream. You can filter that stream by comments to follow the conversation on its own, or read it together with the change history. If the Task is assigned to someone, your comment notifies every assignee – see "Notifications" under Account.
Editing and deleting
You can edit or delete your own comments at any time. Other people’s comments are not yours to change, with one exception: the List Owner can delete any comment on their List to keep the conversation in order. Deleting removes the text for good, and the activity stream keeps a short note that a comment was removed.
A locked Task accepts no new comments, and its existing comments cannot be edited while the lock is on. On a Cowork List, only the Owner can lock or unlock a Task.
Mentioning another Task
Every Task has a number shown in its row and detail, like #123. Type that number in a comment to highlight it and link straight to that Task, so you can point teammates to related work without leaving the conversation.
Where Comments are available
Where Comments can be used is set by your site’s administrator. By default they are available in Cowork Lists, where discussing a shared Task with your team is most useful. An administrator can also make them available in Private, in both, or turn them off. If you do not see the comment control, it has not been enabled for that List. Narrowing the setting later never hides what was already written – existing comments stay visible, only adding new ones is switched off.