Question about three way switch Amp Camp v1.8, need help

Hello,
My question is about the three way switch (blue switch) on the back panel of amp camp version 1.8. Based on the instruction pictures, it could be installed in two different ways, Does this switch have a "right side up"? Sorry for the elementary question, Im new but having fun with the assembly. Thank you in advance!
 
Thanks for helping. I understand the wiring diagram. My only question is whether or not the 3 position toggle switch has a top and bottom. I am guessing that the orientation of the switch makes no difference as long as the three rows of pins are aligned vertically as shown in the instructions. In other words, it is not like a household light switch, which has a top and a bottom. Sorry for this basic question.