I believe that once the top handle is activated and the top pushed up enough to cause the windows to drop, no other assistance is necessary. At least that's how mine operates, up or down.

Pop the handle, push the button, it goes down. Push the button again, it goes back up, re-latch the handle.

BTW: when closing, hold the button long enough after re-latching the handle and the windows go back up automatically. Kool.