How to keep system presets after changing gcode?

I’ve been printing lots of prototypes and color doesn’t matter to me. I feel that the poop at the beginning of the print is quite considerable.
So I looked it up and found one line of gcode can be changed to reduced it.

G1 E50 F200
to
G1 E05 F200

Then the system presets also automatically change. Does anyone know how to keep the presets
On the left side is default gcode , on the right are presets after changing gcode