TAZ 6 How to edit skew compinsation

I have a taz 6 with marlin firmware 2.0.0.144.1. Does anyone know how to edit the skew compensation? I tried entering m852 but I got a message saying it was an unknown command.

Lulzbot has never enabled bed skew compensation.

Either build firmware with it enabled, or just be really good about squaring the frame.