This should be a button an on/off switch in the post processor output dialog window. It should behave before and after every tool change and at the beginning and end of every operation. I have a HAAS mini mill, and my Z zero is below the maximum Z height. My maximum Z height is about 4.3. So the issue is that after a tool change, since the spindle is located at Z zero, the machine moves X and Y. With tall parts, this causes a crash.
