huahua
1
I have two z-axes, so I have two stepper_z in printer.cfg.
I want one of the z’s to work alone, so I want to add a macro to convert z’s pin.
My two z’s don’t need to work at the same time, I just need one z to work alone.
You already got an answer:
huahua
3
The way of thinking about the previous question was a little difficult, so I switched to another way of thinking. 
