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To access the Alerts overview area and open the Annotations chat window, you need at least the View level of the Triggered alerts permission (see a detailed descriptions of the alerts permissions here).
Additionally, you need to have alerts assigned with at least View access (see Assign resources to a role).
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Adding a comment
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Adding a comment to a single alert
Find the desired alert on the list and click the speech bubble icon at the end of the alert row to open the Annotations chat window for that alert.
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In the Annotations chat window, you can see the alert name at the top and comments sent in the middle. To leave your comment, simply introduce a message using the field at the bottom and click the send button or press Enter in your keyboard.
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Adding a comment in bulk
You can add the same annotation to several alerts by checking the boxes next to the names, clicking the Bulk actions button next to the master checkbox, and selecting Annotate.
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