You can animate Background Image X property of the background image in Properties pane > General > Image:
Prepare a background image that its width is larger than scene width plus moving distance (so that it still fills entire scene when moving).
Insert it as an image element.
In Properties pane of the image element > General tab > Image > Background Image section: change Width and Height to px unit to make the background show its actual size.
Also in the above section, add Background Image X animation: animate from negative value to 0 to move from left to right.
In Properties pane > Position & Size tab: reduce image element (not image background) width to fit scene width (set it to 100%)
Iām not sure what do you mean, but you can clone or add a new scene from Scene menu, or right-click menu in Scenes pane.