I don’t really know of course. I’ve been trying to learn by interviewing coffee professionals and many have been kind enough to give me some of their time.
It all seems like people gain the trust of their employer or a friend.
Many of them ask for more, many of them ask for help moving forward. Nearly all of them suggest not burning bridges.
They all showed their passion for coffee and asked for more… “you don’t ask you don’t get.” – guy who started Ted talks
You show passion and willingness to learn. Willingness to work hard and get your boss to trust you.
Then when there might be a chance to move up, ask for it.
Sans Milk 