The spherical movement mode enables you to position an object not by moving this object directly, but by moving the sphere. This makes the operation quicker.
To activate the spherical movement in the Composition mode, select your object and click on the “spherical movement mode” icon (1).
Then, instead of moving the object, move the sphere (panorama) until the position of the element is right for you.
This functionality also makes possible to manage the positioning of elements in depth. To do this, select "Spherical movement mode" then use the mouse wheel to approach the elements towards the camera or vice versa.