In the "Comments" tab, you’ll find a drop-down menu that includes the following options:
Activity → Displays all actions taken on the task.
My Review → Shows comments related to any review requests.
Review Rules →
If a reviewer has already been assigned in the task properties (mandatory review), the Request a Review option will not appear in the comments.
If no reviewer is assigned, you can add or request a review directly from the comments (regular review).

