With our latest version, a task within a card (on a Task Board or Scrum Board) can now be assigned to multiple people, just like the card itself.
This makes it easier to handle more complex work items that contain a large number of tasks, each of which may require more than one person to handle.
To make this work, we have also updated the What’s Assigned to Me and What’s Due Views to make sure everyone who is assigned to a task, where tasks have multiple people responsible for them, sees this clearly.