Create floating button over apps FloaintView Extension?

I wan´t to create a floating button that follows over other apps that i start from my app. I have a landingpage app where i trigger other apps from. I then want to be able to have my floating button over the other apps. I´m using the app in locked down kioskmode.

I saw that this may be possible with the FloatingView extension?

Can someone help me out with this with blocks?

The buttons that i use is Close app button maybe back and forth button.

THX in advance!

As I think, This may not possible. I haven’t think about it. Try or Wait for anyone replies.