How To Turn Off O2 Sensors w/ XCal2?

[SteelersVenom06]

For whatever reason, my car still gives me the P0156 code referring to the driver's side O2 sensor even though I have MIL's (w/ O/R Prochamber installed). A friend of mine has an XCal2 and I was wondering if someone would instruct me how to turn off the O2 sensors using the tuner. Any help is appreciated.

Thanks in advance.

 

[04CobraMatt]

you need it done in a custom tune. the user adjustable settings do not include that option.