[confused]

i am doing two backups, one is a smart update "mirror" bootable clone on one drive, then on the second drive i want to just back-up the users folder. my question is on the second drive. i store other materials on this drive, outside the users folder. what selection/backup procedure do i do to keep my users folder an exact mirror (as the main drive's users folder) but also allows for other files to be stored on this external drive, outside the users folder. thanks in advance.