The recipe calls for 3 rackings, but you can do it with less if you'd like. Some people ferment the whole thing until it is dry in the primary before racking it to a carboy. They then stabilize, fine, and sweeten. When clear, they bottle.
Because I like to ferment with leisure, I:
1) rack before it finishes so that it is protected from air once it's done
2) after it's done, I rack again when it's convenient for me to get it off the sediment that has fallen naturally. I then degas, stabilize, and add fining.
3) I rack a third time to get it off the finings and then sweeten. It's now ready to bottle.
Three rackings works for me on my schedule. Feel free to make changes to fit yours. Some people do rack more times by choice; in some cases, they eliminate using fining agents and clear their batch with time and racking.