In the World Explorer, select the sphere, then Shift- select the
panel.
It is important that you first select the sphere, then multi-select
the panel.
Choose Relations > Bounding Constraints > Box.
The sphere moves onto the panel.
In the viewport,
translate the sphere.
Notice that you cannot move it off the panel.
Tip: If you move an object out of view, select it in the World
Explorer, then set its position to 0 0 0 in the Parameter Editor (under
the World Explorer). If you want to reset the zoom or pan, press the
Q hot key.