What does the registration and settlement of advance payments look like in online cash registers? How to configure the device to communicate with CRK via WLAN? If the cash register communicates with CRK via Ethernet or WiFi, is it possible to use the same connection to communicate with the cash register from the computer (sales system)? Why is the name of the service company and the name of the service technician entered during fiscalisation? Programming VAT rates - what is the binding order of programming VAT rates in cash registers?