schedule 2 engage的业务范围

老师您好，请问为什么“They may engage in all of the same types of business as a Schedule 1 bank” 这句话描述的是schedule 2的key feature？
这是ch1的习题，但是我记得上课的时候讲的是schedule 2只能做schedule 1的some of types of business。
谢谢老师🙏