There is a "Parental Pin" you can activate, all you have to do is go to the green banner, at the top of this screen, and open My Account>>Settings & PINS>>Parental PIN and activate your secret PIN from there.
Here's the info you will need to read first to find out how it all works:
@ukbobboy @Anonymous User
That Help Page seems very badly worded.
It seems to imply that you can’t age restrict Sky Cinema; but if you turn the PIN on, surely you can choose an age restriction that will apply to Sky Cinema?
I know that’s it’s trying to say something about the exception that you must have a PIN to watch live Sky Cinema; but surely it can be made clearer?
And if it really does mean what it seems to say it means, isn’t that just plain wrong-headed of NowTV?