Cut Lead in for waterjet

i am using the postprocessor “Mach3 2 heads”
I have to z axis. One with plasmacutter and the other with waterjet.
Now I need to cut the lead in for the waterjet with lower presure. How can i do this?
There only must be a little hole at every lead in. That have to be cut first with low persure.
I this any way to do this?
Sorry for my english. I am from germany.