Booster seats that only fit into Group 2 are less common. Groups 2 & 3: for children weighing 15 - 36 kg (33 - 79 lbs), roughly 4 to 11 years. These seats are adjustable to cover a wider range of weights and heights and so can last for several years.
As you cut your potatoes place in a pot of water to avoid discoloring. Cook small 1/2 inch pieces 2 minutes in boiling water and drain. If you have larger pieces or whole potatoes, boil up to 10 minutes and drain. You want the potatoes to be hot through, but not over cooked. Remember no larger than 2 inches.
Cook over medium heat until the potatoes are tender, about 20 minutes. They should be fully tender but not falling apart when cooked. When cool enough to handle, peel the skin from the potatoes, cut them lengthwise into quarters, and then cut crosswise into medium-thin slices.