Rob is a DJ and he would like to use iTunes on two separate laptops to mix between. Leo says there's two ways to do this. The first is to use the same Apple ID on both. He'll have up to 5 computers he can use at once. He could also use Family Sharing. That way he can manage all the music between multiple users. Home sharing is another option.
The fastest way would be to copy the library onto a disk, and then import the library into the other laptop.