Probe screen

Hello, good to all.
I use a lot of the centering inside a circle of the "Probe Screen" to find out the exact center.
I do this with a brass washer on the table and a 1/4 router bit on the spindle.
It works perfectly fine for me but I have to do it manually before starting a job again.
Does anyone know, if possible replace that function with lines of G code to do it automatically at the beginning of each machining?
thank you.