Cable calc software should not be relied on 100% for a design aspect of your job, the cables should be calculated the old fashion way (TBH doesn't take a couple of mins to a competent Electrician to do so).. then you can confirm and have a pro' looking software do the printed copy.
You should not get into the habit of using these quick calc' approach software in the design stage, maybe as a onsite ball park figure system until you get back to the office, no insurance company will cover you for using alternative methods of calculation if it is at error, you yourself should always run the figures pen and paper to confirm anyway.
This is half the reason why we have numerically stupid generation of kids (the worst in the world' is because they were given calculators to do everything at school, luckily their lack of maths ability won't hopefully burn a property down or kill someone, don't get into the habit of relying on this software it is designed as a addition to helping you with your pen and paper calcs and should not be used as a replacement for it.