What to do if you need to cancel whole bill, because you have marked wrong recipes?
You can search for the given bill via Menu - Bill list and if the account is still open, just search in the list. After clicking on the bill, the bill will be displayed and in addition to printing or split bill, you also have the option to Cancel bill.
However, it is only possible to cancel bill with the given user rights. First, make sure that the waiter group you belong to has this enabled. Alternatively, contact your manager.
Not sure how to set up an exact account cancellation for a given gwaiter group? And what does a return without a stock or with a stock mean? See the complete list of user rights.