Yes. Any 1-team plan (2, 3 or 4 servings) can be booked by 1 to 4 people, regardless of how much you make.
For example, four people can make just 2 servings, or one adult with three children can make 3 servings.
The price depends on the amount you make, not the group size (meals are 700 JPY per person if you eat here).
Since everyone takes turns, a group of four who wants plenty of hands-on time may prefer 4 servings or a 2-team setup plan.