Thanks but that's already done!
In fact, it's not clear what they're doing, and it doesn't seem to be working the way I thought it would.
Here is what I understood:
Place the objects where you find the dotted lines, or where you find the window in the scene, because you can't change that.
The objects must be in the dotted area, otherwise it doesn't work!
I thought it was a behavior where objects would be stuck to the screen, but it's not that simple, I'm having trouble understanding how it works, plus, yes, objects will stay in the area dotted but that's all, if you resize the window and the objects are at the bottom, bottom right, right, top right, of the window, and you resize the window smaller, they will disappear, in fact they just obey this law of the dotted lines of the window.
I wanted my objects to remain stuck to the window and for it to move depending on its size, so here, I have to put my objects at the top left of the window to be sure to see them, otherwise I have to set the window to maximum size.