How do I create reverse drop ball style platforms

Creating a cross between dropball and platform jumper. I've looked for ever but either i'm not typing in the right words or i'm just having a continuous brain fart.

I need the platforms to spawn at 3 different X coordinates at the top of the layout and scroll down at different speeds.

Much appreciated if anyone could help me with this.

System spawn platform at choose(a,b,c), y - where a, b, and c are your x coordinates.

Use a bullet behavior to scroll down.

Check out the Vertical Space Shooter template that comes with construct.

Like i said...brain fart.

Thanks again brother.