Too bad it doesn't help me at all. I do mainly front-end changes. I thought it would be pretty easy like adding {somecode.groupPrice=1,lol}...
I did big research of modules and didn't find this functionality in any of them. If someone would give his time, and try to help me with code it would be great because this functionality was never solved yet (as far as I search). And if you can give me some advice where I can find some more knowledge of doing things like this it would be great too.