There are no features of air removal from the brake system when replacing the master cylinder.
The master cylinder is mounted on a vacuum amplifier, brake tubes are connected to it and the nuts on the tubes are tightened.
The reservoir is filled with brake fluid and nuts are released on the brake pipes.
When a clean brake fluid starts to flow out of the threads without air bubbles, the nut turns.
After the master cylinder is filled with brake fluid, air is removed from the brake system parts by unscrewing plugs on the service brake cylinders and pressing the brake pedal.
It is better to do this work with an assistant, but you can do it yourself.
You just need to have a stick of suitable length for the brake pedal to rest in the seat. And move quickly.