In BUSY's POS configuration settings, you have the option to configure the field type as fixed, variable, or semi-variable.
According to the above field type settings, at the time of voucher entry, you can control the data entry.
Fixed: You will not be able to change the value.
Variable: The focus will directly focus on the variable field.
Semi-variable: The focus will directly move to the next available variable or fixed field.
So please note that, as per your requirements, you can configure this setting.
For further clarification, feel free to contact the BUSY 24x7 helpline number.8282828282