Set a button over a picture used as background

hi to all
I’m a beginner …as by the title, if I try to add a button it is on the left side up of the screen…I need to move it but I can’t…how I can do it?

Pull in from the Arrangements folder in the Designer to line up components, per taste.
You can nest them.

Hello Fabio

You could make life a whole lot easier for yourself if you invested a day doing the free MIT tutorials. See my website for links and a short movie on placing components like buttons. Learning App Inventor GUI Layout Project File Care How To Position Components (How to Movie)

ohh…thank you for your help…I’m going now to watch them…
all the best