[otrs] Out of office admins?

How can I assign each admin a unique login for tracking purposes, yet allow all admins to view each incoming support request whether it's new or a reply to an existing ticket? My problem is that if Admin #1 replies to a concern and then he has a couple days off and the user replies to his message, he won't get it until he's back at work. If he goes on vacation for a week or two, that could be quite a while. So I need a way for other admins to be able to see all new entries as well as replies so that if something comes in for a particular person but he/she is not in the office, it can still get resolved in a timely fashion. Any ideas or solutions that you could pass along? Thank you!! Gary