I am working with some data that has duplicate names, but also has a clock in schedule. I want to put a new column in that describes a duplicate name as a unique value. (i.e. if john shows up 100 times, the field will show "duplicate 1" each time, but if sam shows up 30 time the field will show "duplicate 2" each time.) This would allow me to use the clock in time in order to determine the time difference between a person's clock ins.