I write something on a card in the Activity window and press "Comment". It then posts on the card. Later I would like to have other people comment on the post, or edit it myself or comment on it myself.
How do I do this?
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Currently you can delete a comment (and re-add a new one), but you cannot edit a comment, or comment on a comment.
... and to state the obvious:
"Now, later I would like to have other people comment on the post, [...] or commennt on it myself. "
Other people, and you, comment on the post by adding more comments :)