Firstly start the game and start producing the stock pick the ones that take the longest!
Now quit the App and advance your clock by a few hours or try to match it with your game say your PUB needs 3:45hours to make the root beer advance the clock by that much, or you can just change the date!
Now when you go back to the game all the stock will be ready! stock the shelves! you can change the time back now! if you don't stock the shelves when you change the time back it will go back to building so stock the shelves!
Also if you change back the time whilst building is in progress you can lose bitizens! So go experiment I built 5 floors in less than 20 minutes!
Now quit the App and advance your clock by a few hours or try to match it with your game say your PUB needs 3:45hours to make the root beer advance the clock by that much, or you can just change the date!
Now when you go back to the game all the stock will be ready! stock the shelves! you can change the time back now! if you don't stock the shelves when you change the time back it will go back to building so stock the shelves!
Also if you change back the time whilst building is in progress you can lose bitizens! So go experiment I built 5 floors in less than 20 minutes!