don't get too hung up on the specifics, like the rest of BIR stuff it's done by eye and feel, when i made the big batches of naan dough the flour was added, then the egg(s), then the salt, sugar and enough milk until it "came together", then you put the bowl in the sink and "scooped" the dough with your one hand, the other moving the bowl round rather than your hand round the bowl, adding water from the tap a few trickles at a time as required until the dough felt soft, pliable, sticky, but all together. then it was covered with plastic food bags, and put in the fridge for a few hours. after that, it would be removed and formed into dough balls on a floured tray, then covered again to stop them drying out in the heat of the kitchen. any unused balls at the end of service would go back in the fridge