Hai
I have created an app based on sharepoint list Started with blank canvas and added three screens. Each screen has a form: gallery, display, edit. In tablet format.

I would like it if screen2 and screen3 are placed to the right of screen1, gallery, in that red box. And that screen1 simply remains visible. That is not happening now. All three screens are now thrown over each other.

Is this possible?
The following would also be beautiful. If you press Save or Cancel in Screen3, Screen2 will reappear And if you press Back in Screen2, Screen2 will disappear.
regards
Ron
@v-bofeng-msft