I suspect that they are moving from days to hours since many staff do some days that are longer than others and some have been booking the longer days as days off holidays ,, someone I know used to book the 7 hour shift as holiday but never the 3 hour shift , so from now on it will be hours taken not days , what will be fun is if someone books 2 hours each shift and then comes in to do the other hours or if everyone did that ,, I do think this could help out those that just need a few hours off one day rather than taking a whole day off ,