"an additional location"

You mention locally or shared. Do you make a client backup into both places (concurrent), or keep specific clients only locally and others only in a shared location, or is one client sometimes backed up at both locations but one location is not updated when making an updated backup of your work for them? Sorry, I realize that's a bit hard to follow, but I am wondering about "conflicted copies" vs concurrency. Also, specifics of that share would be helpful, such as Server? Peer-to-peer? NAS?