Help with Position/Rotation? (Will reward)

I need some help for my GLaDOS. I am trying to get the whole thing to spin, even though only one part is spinning when I use a script, any help? I am trying to be able to spin the top block, and then spin the wwhole thing without having to do TONS of scripting for every animation I want her to do.

Try welding it all together then moving the welded part, or name all the parts something then make a script that moves all parts named it.

Help please :(