Getting into Process engineering field as a CS Undergrad

Hello Fam, I have been following this subreddit for a while now ,as I'm interested in semiconductor as a whole.

Now I'm knowledgeable that Semiconductor is a mammoth of an industry in itself, while I was researching initially about the layer I want to work in, found out my interest lies in the Fab/process engineering side, more than the designing part.

So as a CS undergrad, wanted to know about various roles within this and related areas, prerequisites that I need to take u to familiarize myself, Additionally

I was exploring options to pursue masters in this area.

Opinions and Recommendations are welcomed!