Z-axis home position

Hi
I have a question about the homing sequence. I'm not sure which config line to edit.

The Z-axis is going upwards and hits the switch and then returns +/- 50% down. And that's the home position.
It works fine but when I run a program it will go to home first and then starts its program. That's not perfect because it can crash into the part when going to home.

So my question is, how can I move the home position for the Z axis up?

Thanks John,
It was the home offset setting.
It was set to 100, but I changed it to a lower value to test and it works fine
I set it to 0 in the end