It’ll be cheaper to have that flexible unit of floaters than to have people on paid duty, it’s like brihard said,
Nothing they are saying is new or not used elsewhere- it’s just a blocked off set of people that are flexing each shift around what that shift needs- while selling it as they are dealing with the long hanging “priority 5” calls.
They haven’t made anything new but a weird naming convention for a thing that is essentially just offsetting the amount of paid duty the city has.
I’m reasonably confident when you look at them in a year you’ll find they do almost zero handling of long hanging low priority files with the exception of a couple peak days.