Parsing JSON with a lot of Subproperty

[Perfecto]

Hi,
Sometimes I have a lot of Subproperty when i'm parsing JSON, Is there a way to do everything in 1 click or do I have to do it one by one like I do now? I think this would be a good feature to add if it's not already there.
example :

 

[VladZen]

Not fully understand what you have to do one by one. Please explain