In the main form I have a button that opens a new pop up window (secondary form), and from the pop up window I have another button that will open a new pop up window (tertiary form). 

My question is, is there a way that the secondary form will stay open when the tertiary form is opened?
Right now, when I click on the button to open the tertiary form, the secondary form is closed, I want it to just open in front of the secondary form. 

I have tried using "nodestroy: True" but I guess it's not the correct way to do it.

Any idea?