Hileli

Hey there, i have some probably pretty silly questions about the diypnp break out board J88 connector for my mega squirt 2. I am about to start soldering the pigtail harness into the J88 but I am new and do not understand where exactly to solder. I have a ecu pinout to look at but where I'm getting lost is on the J88 board there is multiple spots for the pins. I have uploaded a picture.
There is duplicate pins on the spot that says x connect ready do I need to only solder on to the x connect side or does it matter? Thanks