Opening apps from terminal

Sorry for simple question, new user here.

If i go to Q > Apps > Untrusted > Xfce terminal and open a terminal.

Does all gui apps that i run from this terminal will belong to same untrusted
Qube ? for example if i run firefox or libreoffice from this terminal?

Or i must add “App shorcuts” for each app i want to use in this qube ?

Yes, everything you do in that terminal happens in the qube. That includes launching other graphical applications. You’ll also see the same [untrusted] prefix (or whatever the qube name is) in the title bar of the Firefox/LibreOffice/etc. window when it pops up.