Limiting summary time on all devices

Hi,

I've just installed Norton Family parental control.

I'd like to ask if is it possible to limit time spent on all devices together (not on each separately).
It would be much more useful. Now kid can spent 1h on tablet + 1h on PC + 1h on phone.
I'd like to set 1h (tablet + PC) and 1h for phone.


I think grouping application (games, edu, internet) would be nice feature. I could limit games to 1h but education apps limit to additional 2hr or even without limitation..

 

Best regards

Paweł