Gameplay Building a stockpile?

Hey guys, somehow the mechanic of building a stockpile seems to escape me. There is an icon that would look like one, but it tells me "this is not part of the prototype (but it will be awesome)."
As people seems to have been able to build those stockpiles my guess this is not the way to make one.
Could anyone help me on this please?

you select the building task (The hammer on the bottom left corner) and a menu will pop up to the right; you'll see the same stock pile icon. Click it, place the shadow builds where u please; select brickton(s) and right click the same hammer (this will assign bricktons to the task of building) NOTE: you need lumber first so it helps to chop trees before building anything...
*NOTE*- To stop placing ghost-builds, hold right click and move to the red cancel icon.

Haha ninajed by robo!

As an add on to this, if you mess up your placement of the stockpiles (which i've done countless times) you can delete them by either crud clicking while they're a ghost, or click them directly and press delete if they're already constructed.

Thanks guys. Don't know why I missed this .