No! You only need one really! Mine is facing my front door as a cure for having my stairs facing my front door (wealth running out of house) so I also have one on the SE corner of my desk. A lot of FS is about direction and it can be confusing sometimes to work out your directions. You can look at a bagua and put that over the whole imprint of your house. However, as a general rule of thumb it’s safe to stand in your doorway of a specific room and SE is the far left hand corner as you stand in the doorway . Placement can be very hard if you worry about it. Please don’t. No need. I have been fortunate having a Feng Shui Master to help and he did my horoscope as well. All too much for now though. So - short answer, toad in far right left corner of either your desk or your room should work. If you don’t have a desk the SE corner of a room is good. If you go back to the beginning on this thread
@PixelGirl shows you a perfect desk layout covering all the compass points. I miss her
.