Thanks, that's exactly what I had in mind, but I'd rather not install software that's not working 100% on my dad's new MBP. He literally has had his first Mac-Experience© 45 days ago. He seems inquisitive and seems to remember stuff better than when I had to explain things on his PC. But he still is, after so many years, worse than a computer novice.
So everything better works and works exactly like I showed him, otherwise he won't use the function.
Anyway thanks ALL who tried to help. Big time.