lordheetsink,
Callers that are allowed to camp-on (queue) on to a Hunt Group will not leave it UNLESS you have something programmed in the Recall Destination and then the Recall Timer is used to send any caller there when they have been in the Hunt Group for that long.
The Recall Destination can be Voice Mail, but you would need to create a mailbox associated with the Hunt Group for the caller to go to. This mailbox can be set to notify any user on the system as its message notification is blank by default.
If you wanted to send it to a particular users mailbox then you would need to create a Call Routing Announcement that has the recordings removed and times out to that users mailbox.
Thanks,
TE