The POSExpress application doesn't appear on the developer's website, but they have listed under the Products section a list with their supported items. However, their old website redirects to the new one called Club Prophet Systems.
I strongly advice to get in touch with them to learn about the software you've mentioend above: https://www.clubprophetsystems.com/products
Secondly, if you have the software installed, go to Help > Contents to learn about the configuration options and the necessary steps you have to take in order to properly use the product.
