Changing frame size of just one of two parallel graphs in graph builder?

[#1]

Hello everyone,

I am still quite new to jmp and I hope, I was not hopelessly blind and did oversee an already existing topic. I am a pro at this one.

So, my problem is:

I want to create box plots that first start with all results plotted in one box followed by the results of different collectives. I was able to create this kind of figure using the Graph Builder by creating two parallel graphs (see picture below: reality). But I would like the first diagram to be smaller (wish). Not only because this approach would safe a lot of space but also because it facilitates the understanding of the picture. Is it possible, to fullfill my wish? Thank you all in advance.

[#2]

I am trying to do this with the UI on MacOS, what is the MacOS key to press to do the "Alt-Click on lower corner"?

[#3]

No Alt needed - works great once you know where to find the spot:

[#4]

Aha, now I see!  Thanks!