By design, anytime you assign a task to someone they will also be added as a follower. They can remove themselves from following the task and still update it however, they would not receive any email notifications on the task.
Also: How come I can't add someone as a follower. I get a red bar that states they can't be added are the user doesn't have access to the task. This is why I'm adding them as a follower....
If your Project is Restricted, you will not be able to add Followers unless the task is assigned to them.
If the Project is Open, you will be able to add followers without assigning them the task.
Hope this helps.
Thank you John. This solved the problem.
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