I demonstrate making a smoothie from frozen fruit in a bag. The frozen fruit straight from the bag will take time to thaw enough to circulate in the machine with a small amount of liquid. I used only little liquid for calorie reduction by avoiding adding sweetener and for a thicker/richer consistency. You can thin out the mix which will process faster but it will affect the taste so you might need to add a sweetener.
Another tip is to let the frozen fruit thaw out for a few minutes or use a microwave to do so. I just do it this way to show that the machine can do it on its own.