When using the controller with the list of parts you need to cut and you wish to change the quantity of a part or delete that part you are unable to do so. Is there a reason for that?
The need occurs for this if on checking you realise that a part is no longer required or you have some waste material nearby that would do for that part. To regenerate the part from the office is not worth the time.
Neville,
You can change the quantity in CN, I'm pretty sure you simply click the line to highlight then press Tab on your keyboard and this should highlight the quantity ready for you to change.
Let me know if this doesn't work for you and ill go out to our machine and have a look at you as it has been a while since I have done it. I know it can be done though...
I believe that the correct method is to select the entry and then press [ENTER] or [RETURN]. Then enter the new quantity and again press [ENTER] or [RETURN] to accept the new quantity.