replacing a button on control panel

The button fell out, we ordered a new one but are unsure how to put it back in. We don’t want to break it while trying. any tips or help would be appreciated. Do we need to take the panel off in order to get the button back in. please advise. thank you

You will need to remove the screws to seperate the inner door from the outer door, open the door and you’ll see the screws around the doorliner