When removing the inside handle, as someone posted, push in to depress the spring and you will see the pin.
Depending upon how strong the springs are, how reluctant the pins are to be removed, and how coordinated you are, it is sometimes better done with 3 hands.
Pushing the spring, escutcheon back will expose the pin. Sometimes the pins are easy, sometimes they are tough.
As I have redone my door panels, mine just slip right out . Actually during this photo session mine fell out onto the floor when I depressed the spring and wiggled the handle.
The extra hand comes in if you need to use a pick, or a nail to coax the pin out.
Be careful if doing the pin by yourself. If the escutcheon is released during removal or installation with spring pressure behind it, without the pin being centered, it is possible to bend the escutcheon. Been there done that.
EDIT: can't get the pics in the order that I wanted them.