It is important to keep an eye on what the cashiers are doing at the registers. The point of sale system has 5 built in fraud watch reports that you should be aware of. 

The fraud watch reports are found in the store section, under operators, then scroll down in the operator reports and you'll see them. 

We advise that you should pull each one of these reports once a week, or once every two weeks just to see what your cashiers are doing. Each report will show a list of cashiers on the side, and each column will show one function that they are doing. The functions these reports list tend to be negative things such as refunds, bottle deposits, voids, etc. 

Here is an example of the Operator Negative Report 

What you want to look out for is cashiers that have abnormally high numbers in specific columns. If most of your cashiers have less than $50 in refunds but one cashier has more than $700 in refunds, you might want to take a look at what that cashier is doing. Perhaps there's a perfectly fine reason why she has that much in refunds, or perhaps she's stealing from you. These reports will help you identify which cashiers need to be scrutinized better. 

If you do find cashiers that you'd like to investigate further, you'll want to follow up by viewing the electronic journal to see each and every transaction this cashier has done. The journal will pin point exactly when and where these functions were ran allowing you to view surveillance tapes if you need. 

The fraud watch reports are a good place to start looking for fraud, and they'll help you start to paint a picture of what's happening in your store. They might not tell you exactly that someone is stealing from you but they'll give you an idea of where to start looking.