To set up different cash boxes we will go to Finance -> Cash Control -> Cash Boxes

Here we will see the list of cash boxes we have. We can create new ones pressing NEW , edit any of the existing ones pressing , or delete them pressing.

When we click on New to create a new cash box we'll see the following window, where we have to fill in the name of the cashbox, if we want a description about this new box, the accounts. And we will select whether or not it is Active and a few more options.