ArduRover 4.5.2 Can not find parameters GPS_MB1_OFS_X, GPS_MB1_OFS_Y, GPS_MB1_OFS_Z

I am using ArduRover 4.5.2. I am trying to set up gps for yaw using dual antenna CUAV C-RTK2HP. I need to set the location of the antenna but I can not find parameters

GPS_MB1_OFS_X, GPS_MB1_OFS_Y, GPS_MB1_OFS

Have these parameters been removed in this version. If so how I set the location effectively. If not, how can I find them. Thanks