It is very easy for anyone who knows HTML or CSS can customize it in any way they want without having much experience as long you know what your doing! I don't like how there isn' t an advanced search option when searching through invoices but that's probably something only someone familiar could fix while others would have difficulty figuring out where things are at if this wasn't implemented first time around haha - great product overall!! There aren’t many features missing from our POS software so far (coming off 7 years using Sage) which makes us feel good about switching over all together now since we will be able use everything seamlessly going forward- not just inventory tracking etc.- Our customer service has been stellar thusfar too.