How to show ALL instances in the Z-order window when one instance is selected?

Is there a way to see all other instances and their position in the Z-order after clicking on an instance in the Z-order window?

Currently, when I click on an instance in the editor, all other instances are hidden in the Z-order window.

However, I find this very impractical: I have a lot of instances in the Editor, so it would be especially useful if, after selecting an instance, I could immediately see the Z-order positions of the others.

Is there a trick or an option that makes this possible?

Thanks in advance for your help.

Ctrl a to select all (as long as they are unlocked i think) then click the instance you want and the others should stay there.

although reading it again you might mean something else. but maybe this helps.