This will be useful where you have many cost centres (e.g. branches) and you want to create an account for a new expense type. Rather than create each 'account+cost centre' individually, you can clone an existing expense account.
This will create a new 'account' with as many cost centre records as the current one.
here, a new account C421 will be created in the image of account C420. By ticking the boxes, new sales and supply codes will also be created.