I know that I can see my own notifications using the bell.

Is there any way to see all the notifications for a different account?
The problem I'm trying to solve is that one Jira user gets lots of notifications, but doesn't always check them. So comments or requests go unanswered for too long (sometimes). If I could look at these users notifications, I could remind or escalate for the most important issues.
This would also be useful if someone is out of the office for a while.