Obstacle Avoidance Sensors

Hi Friends,

I am working on integrating Obstacle Avoidance Sensors on four sides of a drone. As both of the telemetry ports are used, I have decided to connect to the I2C port. I happen to notice that the four sensors could be connected to PCA9544 I2C multiplexer. My question is that how do I tune the parameters in Mission Planner? Any one who knows the answer, please do let me know. Thank you