In Objects and Animation click on (highlight) the object/image that you wish to apply Pan (or Zoom / Rotate) to.
Note the Pan and Zoom parameters above: Pan = Zero; Zoom = 640×360 (In Pixels Mode)
Right Click on the Key Frame on the extreme left of the timeline and choose “Add Key Frame” from the menu.
A new (Blank) Key Frame is created at the Full Slide Duration:
Change the Pan Parameters as shown (Pixels Mode) or drag the Image to the new position:
Press Play. The Object moves from its original position to its new position. The SPEED of the animation is governed by the time between the Key Frames.