24B Redwood - How can a matrix manager access a check-in they already responded to?

Summary:

I know the matrix manager can access a worker's performance check-in by either going to their own Performance page (which somehow seems to show pending check-ins) or by clicking the link in the check-in notification. My question is: how can the matrix manager access the check-in after they completed their part in it? While I guess they can probably look up the link in the notification, that seems like a really clumsy workaround, especially if the manager wants to access the check-in several months later.

Version (include the version you are using, if applicable):

24B - Redwood