A previous thread on this topic revealed no way to easily organize apps nor move two at once.
One method others and I use is to have just three fixed Icons on the bottom bar (I have Music, Videos and Photos and moved the 4th default, (ITunes) to the 1st app screen).
Then, with just three apps on the bottom bar, when you are moving apps around, move it to the bottom bar, then go to the screen you want and move it up from the bottom bar to the screen, leaving just three again. Then keep doing that with all the apps you need to move until you are done.
Mike