Adding a follower to a task is easy!
1) Select the task for which you would like to add a follower, and notice the details panel that opens on the right.
2) Next, click “Invite”, which should appear under “History”, to the right. A list of team members/collaborators should drop down directly below the button. Then, simply select the person you would like to add as a follower!
Followers on tasks will receive chats messages that pertain to that task, and receive updates when things like the due date are modified.