I will have to read up on this one.
Its difficult to explain in words. There are some good video’s out about Flow that “show” it far better than anything I could explain. But in a nutshell, you can operate on individual frames and when you crank the internal shaft, it splits the cells and the honey drains out. Once done, the bees clean up the rest par usual and get busy filling it up again; at least, that is the pitch. I won’t know until next season for certain after I use mine.