What happens next in this paragraph?

How to cook in a microwave oven
Separate foods by cooking time.
Some foods take longer than others to cook. Specifically, larger and thicker foods will need longer than thinner and smaller foods.
(I) For example, cubed meats will need longer than smaller cuts of meat. Stir the food in gradually if time is of the essence. (II) To prevent large food from undercooking and small food from overcooking, separate the food and cook it separately. Starchy vegetables like potatoes and sweet potatoes tend to need the longest cooking time, followed by meat, and then smaller vegetables need the shortest time. (III) This would be necessary to cook larger meals. Further, taller or thicker foods need ovens at a more comfortable temperature. (IV) If you wait until the bottom half of the dish has dried out, the final product will be watery. Feeding snacks individually ahead of time is, of course, very useful for this situation.
(II)