Timestamp for Volunteer Activity

We would like to have a timestamp filter added to see when volunteers respond to shifts, cancel shifts and check in to shifts. We have a large volunteer base, and it would be helpful to track this information. One example where this information would have been helpful was this morning we had 2 high school students arrive an hour late to the volunteer shift, and checked in at the kiosk with the start time. If I could see the time they actually checked in, I would be able to adjust their hours accordingly. 

It would also be useful in the cases where we have volunteers who we have asked to no longer volunteer, and they will have future shifts scheduled. I would like to know if they were already signed up before being asked to leave, or if they have gone in and resigned up for shifts. Same situation for volunteers who have frequent no-shows.