Hi Albanco
You don't make me nervous - rotweillers,

spiders

and taking the wife shopping

make me nervous but not programming tills!
There is no way that your friend ever had a cheque printed off a helix20

- it uses heat to print not ink - so unless banks change the paper that cheques are written on - you never will either
If you have managed to ram clear this machine, before you spend hours on anything else, please make sure that you have set the memory allocation to suit the type of environment that the machine is going to be used in - getting this wrong is devastating - any changes to the memory allocation program will result in the loss of everything else

- get it right first before any other programming.
look at which port the printer is plugged into and set the port parameters to match the printer
next set the printer routing and test it - once that is done, you can start adjusting the keyboard layout on the touch screen to suit and cashire names [hoped you asked her her name before playing with her?

]and sign on numbers
once the machine is configured in the way that you want, THEN AND ONLY THEN start adding products - no-one i know adds stock at the very start as it all goes to cock the first [and second and third

] time you mess up getting used to the new machine.
suggest a period of use -say up to the next stock take before entering stock quantities!