I'm not even sure how to ask the question I need the answer to
I want to try to stack a cake using smaller spacers inbetween some of the tiers like the one I attached, but I'm not sure what (if anything) has been done to the bottom of the tiers that over hang. Obviously, if the cake is tall enough then someone is going to have a view of the underside of some of the tiers. Does the fondant get wrapped around the underside of the cake & cake board or is there another trick I don't know of?

Darnit, the photo wouldn't attach. Oh well, I think most of you know what I'm trying to get at. (I hope)
Thank you in advance for any tips on how to do this!

Yes, for cakes like that, the fondant is usually wrapped around the board.

Or, the bottom of the board can be wrapped in a decorative, coordinating paper or foil.

Whenever I do something like that, I just make sure I get the bottom looking clean as possible (you only get to see the cardboard). I'd like to know what other people do though.