How to use two time back botton

I want to know that i use different vertical alingment in single screen1 to make diffrent pages. But i am confuse because when i back pressed in diffrent vertical alienment i come in screen 1 but how go to close application

Two time back button in Thunkable X is not implemented yet.

If the application is running in Thunkable Live, then you can close it and go to the project list by shaking the device.