Window cranks and hardware

I am trying to make sure I have the correct hands and hardware to fix my windows. I have attached 3 pictures showing the setup I have.

I would like to replace the crank and the casing. The handle just comes out and I am assuming its not supposed to do that. I think I may need the arm as well.

My window opens out. Each handle is in a different place. Do I need the same set up? just in right or left handed placement.