Situation: bales scattered over the hayfield--use the accumulator to gather bales in groups of eight. When this step is done, remove the accumulator from the squeeze (it's detachable) and pick up the bale groups one at a time and stack on transport device (generally a flatbed trailer). Once that's done, my job is over (I have no need for baled hay around my place--no animals to feed) so I don't get involved in unloading bales.
That photo I posted doesn't show the four brackets that are welded to the tops of the squeeze arms (two on each arm) to attach the accumulator.