You can track activity and leave comments for every item of your Tasks Checklist. To view Activity & Conversation panel, click on the chosen checklist item, there you'll see:
- The list of actions performed with the item (creating an item, moving it across the lists, adding assignees and marking the task as 'Done')
- The user name of the action author with a time stamp
- Comments section for discussions

To tag your colleagues in a comment use ‘@’ symbol, then choose the user name of the intended teammate.
