Implement a way to see currently checked in volunteers live

This would be useful for the volunteer coordinator to see who is currently checked in and actively volunteering in the building. Rather than having to pull an excel sheet of every single volunteer. This would be helpful in the event of an emergency and everyone needed to evacuate the building. You would have a list of who is checked in and who would need to be accounted for. This would also help in tracking in live time volunteers checking in and out.