Tap A, then tap a six digit number, then tap C and remember this number, because you'll need it to open the door again.
So I tap A, then six numbers, then C so I choose any six numbers?
That's right, and when you've done that, turn the dial quickly and the safe is locked.
So, that's A then six numbers, then C, then turn the dial quickly.
That's right madam. So, to open the door again, tap A then your code number, turn the dial and the door will open.
Tap A, the code, turn the dial ....... OK, I see, but supposing I can't open it again?
Don't worry, if you really get stuck I'll send someone up to help you.
Oh, thank you, well, I'll have a go then.
You're welcome.