Once you oil the balls, you can do what they do outside and put them altogether in a box. But I find it easier to use non-stick muffin trays as I can minimize the amount of oil used and when I remove them, they come out as nice round ice hockey like pucks which is easy to flatten into round discs for flipping. You should try to rest them for at least 8 hours or overnight, because during this time, the enzymes in the flour will start working on the sugars and some of the wild yeast in the air will start fermenting the dough. The resting makes the dough more pliable and easy to flip as well as give it a more complex flavour. Remember to cover the dough balls with clingwrap to keep the surface from drying out. If you are in a hurry, you can flip the dough in as little as 50 mins after balling. (I guess it could be shorter, I just haven’t tried it yet) It still works, but you might find it breaks a little easier