Ok, I finally plunged into autostart using Xcode 8.
I could be conceptually wrong. However, I have a view in IB that has 2 button shortcuts and a dead center image in a 300 x 300 view for 6plus and 6 devices.

What I want to do is resize the image for iPhone 5 (SE), so I click Vary for Traits and select the height and width, and then change the values ββto 150 x 150 clicks and everything looks fine looking at iphone 5 (SE).


Now, switching to 6plus and 6, he also resized to 150 x 150, but I want the image size to remain at 300 x 300. Again, I may have the wrong idea.
I thought that the whole point is that its different size depends on what is selected, that is, changed.