AUTO PATH: HOW TO CHANGE "CLEARPLANE" ORIENTATION

AUTO PATH: HOW TO CHANGE "CLEARPLANE" ORIENTATION

Usually I just program in Z axis and the AUTO PATH clears features in the Z axis no problem. 
How do I set the AUTO PATH generation to a different axis? I am programming a part using primarily the XMINUS axis as my primary orientation, but the AUTO PATH wont generate path lines in the corresponding XMINUS axis. How do I fix this? 

btw FULL AUTO doesn't work either.