I don’t see an attached image. …If you want to show a photo, you’ll need to host the photo somewhere else like google photos and link to it in this forum.
I’m not sure exactly what you are asking, but please look at the schematic at the end of the assembly manual. That should tell you what the sensor pins are attached to. But you should know the only sensors that will work with the Altura are ultrasonic HC-SR04 or similar variations.
-Brach