hi,
I dont see any chance to make this happen.
You are not able to trigger a func_rotate and other stuff can only move one direction.
in my mod working on you are able to trigger func_rotate and there is also rotating doors, mmmh however...
one workaround i can imagine is:
make the position 1 and the position 2 as doors. and make the key speed to -1 so you wont see a moving.
when press the button or your activating thing then move the part 1 down and the other group up
cheers