Fences around farm, how?

[KasparL]

I see lots of videos on youtube where people have fences built around their farms, how?
I do not seems to see such options

[Hinkel]

When you place a farm building, you can adjust the size of the fields, like you do for garbage and such.
The fence will automatically placed, when you set the size of the farm fields.

[mackster]

Yeah, I like the fences - cant wait till we can plop our own tho