Would it be possible to make another GDevelop project which you can place and move around objects (which I can make) and so it exports as a file or copies to clipboard (which I can do) but the only issue, how would I export it (as in what would the exported file say in it or what could the copied text say) and how would I load it into my game?
In your current project you could try to create an External Layout and place objects there. Then you would go into your events and add the external layout. Hope that helps 