Group with groups inside strechting or resizing

sketchup

#1

To use a simple sample. A inside wall with insulation and on both sides two time two plasterboards.

How can I resize the outer group so the inner group wil resize with it at the same time?

Now I do one-by-one by double-click and stretch them to the new size. For simple wall parts this just requires the push-pull. But would love to know how to do this in one go.

Any suggestions for SU2016 and/or SU2017?